Commit Graph

37301 Commits

Author SHA1 Message Date
Anton Vorontsov
8a0b177f36 powerpc/85xx: Don't scan for TBI PHY addresses on MPC8569E-MDS boards
Sometimes (e.g. when there are no UEMs attached to a board)
fsl_pq_mdio_find_free() fails to find a spare address for a TBI PHY,
this is because get_phy_id() returns bogus 0x0000ffff values
(0xffffffff is expected), and therefore mdio bus probing fails with
the following message:

  fsl-pq_mdio: probe of e0082120.mdio failed with error -16

And obviously ethernet doesn't work after this.

This patch solves the problem by adding tbi-phy node into mdio node,
so that we won't scan for spare addresses, we'll just use a fixed one.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-07-29 23:16:39 -05:00
Anton Vorontsov
c4673f9a32 powerpc/85xx: Fix ethernet link detection on MPC8569E-MDS boards
Linux isn't able to detect link changes on ethernet ports that were
used by U-Boot. This is because U-Boot wrongly clears interrupt
polarity bit (INTPOL, 0x400) in the extended status register (EXT_SR,
0x1b) of Marvell PHYs.

There is no easy way for PHY drivers to know IRQ line polarity (we
could extract it from the device tree and pass it to phydevs, but
that'll be quite a lot of work), so for now just reset the PHYs to
their default states.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-07-29 23:14:18 -05:00
Kumar Gala
5156ddce6c powerpc/mm: Fix SMP issue with MMU context handling code
In switch_mmu_context() if we call steal_context_smp() to get a context
to use we shouldn't fall through and than call steal_context_up().  Doing
so can be problematic in that the 'mm' that steal_context_up() ends up
using will not get marked dirty in the stale_map[] for other CPUs that
might have used that mm.  Thus we could end up with stale TLB entries in
the other CPUs that can cause all kinda of havoc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-07-29 23:05:43 -05:00
Mark Brown
9b71de49b0 S3C64XX: Fix ARMCLK configuration
The value of armclk_mask needs to be inverted for use as a mask on
the register value when updating ARM_RATIO.

This is critical for cpufreq support, without it attempts to scale
the frequency of the core trash pretty much the entire clock tree.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-07-29 23:47:14 +01:00
Mark Brown
1d91e1a296 S3C64XX: Fix get_rate() for ARMCLK
If the requested clock is faster than the parent clock then the
parent clock is the closest we can get to the request so we need
to return that instead of the requested clock.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-07-29 23:47:14 +01:00
Lars-Peter Clausen
0c997c0eaa S3C24XX: GPIO: Fix pin range check in s3c_gpiolib_getchip
In the s3c_gpiolib_getchip implementation for s3c24xx the check whether a pin is
in the gpio banks range is reversed. Thus the function returns NULL for valid
pins and the gpio chip if its not valid.

As a result gpio states are not saved/restored properly during suspend/resume.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-07-29 23:47:14 +01:00
Linus Torvalds
84210aeb4a Merge branch 'drm-radeon-kms' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-radeon-kms' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (35 commits)
  drm/radeon: set fb aperture sizes for framebuffer handoff.
  drm/ttm: fix highuser vs dma32 confusion.
  drm/radeon: Fix size used for benchmarking BO copies.
  drm/radeon: Add radeon.test parameter for running BO GPU copy tests.
  drm/radeon/kms: allow interruptible waits for objects.
  drm/ttm: powerpc: Fix Highmem cache flushing.
  x86: Export kmap_atomic_prot() needed for TTM.
  drm/ttm: Fix ttm in-kernel copying of pages with non-standard caching attributes.
  drm/ttm: Fix an oops and sync object leak.
  drm/radeon/kms: vram sizing on certain r100 chips needs workaround.
  drm/radeon: Pay more attention to object placement requested by userspace.
  drm/radeon: Fall back to evicting BOs with memcpy if necessary.
  drm/radeon: Don't unreserve twice on failure to validate.
  drm/radeon/kms: fix bandwidth computation on avivo hardware
  drm/radeon/kms: add initial colortiling support.
  drm/radeon/kms: fix hotspot handling on pre-avivo chips
  drm/radeon/kms: enable frac fb divs on rs600/rs690/rs740
  drm/radeon/kms: add PLL flag to prefer frequencies <= the target freq
  drm/radeon/kms: block RN50 from using 3D engine.
  drm/radeon/kms: fix VRAM sizing like DDX does it.
  ...
2009-07-29 12:31:59 -07:00
Thomas Hellstrom
73ba651fc2 x86: Export kmap_atomic_prot() needed for TTM.
This functionality is needed to kmap_atomic() highmem pages that may
potentially have or are about to set up other mappings with
non-standard caching attributes.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-07-29 15:56:22 +10:00
Sascha Hauer
42469ff014 mx3 defconfig update
- enable PCM043, MX31LILLY, ARMADILLO5X0 and MX35_3DS boards
- enable MXC nand driver
- enable UBI support
- disable cs89x0 support which broke all boards which do not have this chip

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-07-28 14:24:28 +02:00
Sascha Hauer
8666f8deec mx27 defconfig update
- enable MX27_3DS and MX27LITE Board
- enable MXC nand driver
- enable UBI support

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2009-07-28 14:22:42 +02:00
Benjamin Herrenschmidt
4733fd328f mm: Remove duplicate definitions in MIPS and SH
Those definitions are already provided by asm-generic

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-27 17:26:44 -07:00
Robert Richter
0e83815be7 x86: fix section mismatch for i386 init code
Startup code for i386 in arch/x86/kernel/head_32.S is using the
reference variable initial_code that is located in the .cpuinit.data
section. If CONFIG_HOTPLUG_CPU is enabled, startup code is not in an
init section and can be called later too. In this case the reference
initial_code must be kept too. This patch fixes this. See below for
the section mismatch warning.

 WARNING: vmlinux.o(.cpuinit.data+0x0): Section mismatch in reference
 from the variable initial_code to the function
 .init.text:i386_start_kernel()
 The variable __cpuinitdata initial_code references
 a function __init i386_start_kernel().
 If i386_start_kernel is only used by initial_code then
 annotate i386_start_kernel with a matching annotation.

Signed-off-by: Robert Richter <robert.richter@amd.com>
LKML-Reference: <1248716632-26844-1-git-send-email-robert.richter@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-27 14:18:46 -07:00
Linus Torvalds
6a31d4aeab Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Makefile cleanup
  microblaze: Typo fix for cpu param inconsistency
  microblaze: Add support for R_MICROBLAZE_64_NONE
  microblaze: Get module loading working
  microblaze: remove sys_ipc
  microblaze: Support unaligned address for put/get_user macros
  microblaze: Detect new Microblaze 7.20 versions
  microblaze: Fix do_page_fault for no context
  microblaze: Add _PAGE_FILE macros to pgtable.h
  microblaze: Fix put_user macro for 64bits arguments
  microblaze: Clear print messages for DTB passing via r7
  microblaze: Not to clear r7 after copying DTB to kernel
  microblaze: Add messages about FDT blob
  microblaze: Final support for statically linked DTB
  microblaze: remove duplicated #include
  microblaze: Define tlb_flush macro
2009-07-27 12:18:27 -07:00
Linus Torvalds
ca597a02cd Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: geode: Mark mfgpt irq IRQF_TIMER to prevent resume failure
  x86, amd: Don't probe for extended APIC ID if APICs are disabled
  x86, mce: Rename incorrect macro name "CONFIG_X86_THRESHOLD"
  x86-64: Fix bad_srat() to clear all state
  x86, mce: Fix set_trigger() accessor
  x86: Fix movq immediate operand constraints in uaccess.h
  x86: Fix movq immediate operand constraints in uaccess_64.h
  x86: Add reboot fixup for SBC-fitPC2
  x86: Include all of .data.* sections in _edata on 64-bit
  x86: Add quirk for Intel DG45ID board to avoid low memory corruption
2009-07-27 12:18:09 -07:00
Linus Torvalds
760dcc6e18 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] zcrypt: fix scheduling of hrtimer ap_poll_timer
  [S390] vdso: clock_gettime of CLOCK_THREAD_CPUTIME_ID with noexec=on
  [S390] vdso: fix per cpu area allocation
  [S390] hibernation: fix register corruption on machine checks
  [S390] hibernation: fix lowcore handling
2009-07-27 12:16:38 -07:00
Benjamin Herrenschmidt
9e1b32caa5 mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()
mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()

Upcoming paches to support the new 64-bit "BookE" powerpc architecture
will need to have the virtual address corresponding to PTE page when
freeing it, due to the way the HW table walker works.

Basically, the TLB can be loaded with "large" pages that cover the whole
virtual space (well, sort-of, half of it actually) represented by a PTE
page, and which contain an "indirect" bit indicating that this TLB entry
RPN points to an array of PTEs from which the TLB can then create direct
entries. Thus, in order to invalidate those when PTE pages are deleted,
we need the virtual address to pass to tlbilx or tlbivax instructions.

The old trick of sticking it somewhere in the PTE page struct page sucks
too much, the address is almost readily available in all call sites and
almost everybody implemets these as macros, so we may as well add the
argument everywhere. I added it to the pmd and pud variants for consistency.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David Howells <dhowells@redhat.com> [MN10300 & FRV]
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-27 12:10:38 -07:00
Tomas Cech
c640e1cb45 ARM: 5623/1: Treo680: ir shutdown typo fix
correct GPIO freed in treo680_irda_shutdown()

Signed-off-by: Tomáš ?ech <sleep_walker@suse.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-27 14:23:57 +01:00
Sam Ravnborg
950b260ed2 microblaze: Makefile cleanup
Reviewed the Makefile on request by Michal and this is the resulting changes.

o Use ':=' for assignmnet so we do not re-evaluate for each use
o Use $(shell echo xxx) to remove ""
o Replaced CFLAGS_KERNEL with KBUILD_CFLAGS
  The settings are equally relevant for modules and the linked kernel
o Dropped LDFLAGS_BLOB - it is no longer used
o Refactored assignmnets to libs-y and core-y
o Use MMU for the MMU specific extension. "MMUEXT" was hurting my eyes
  and I did not wanted it spread to m68k

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:20 +02:00
Michal Simek
65d3db0601 microblaze: Typo fix for cpu param inconsistency
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:19 +02:00
Michal Simek
679711b82f microblaze: Add support for R_MICROBLAZE_64_NONE
For example reiserfs use this relocation type.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:18 +02:00
John Williams
fadf2e60a6 microblaze: Get module loading working
New reloc type R_MICROBLAZE_32_PCREL_LO requires a null handler (no work to do).

Remove legacy hack for broken linker pre gcc-4.1.1, that required us to extract
an offset from the code, add it to the addend, then rewrite the instruction.

Fixup the invalid reloc type error output.

Boot tested with the xilinx_emaclite ethernet driver.

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:17 +02:00
Arnd Bergmann
bfc0ca0d33 microblaze: remove sys_ipc
The ipc system call is now unused in microblaze,
as the system call table points directly to the
indidual system calls for IPC.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:16 +02:00
Michal Simek
3863dbceac microblaze: Support unaligned address for put/get_user macros
This patch add support for cases where load/store instruction
in put/get_user macro gets unaligned pointer to data and this
address is not valid. I prevent all cases which can failed.
I had to disable first stage of unaligned handler which is used
only for noMMU kernel and the whole work is done when interrupt
is enabled.
You have enable HW support for detect unaligned access in Microblaze.

This patch fixed three LTP tests:
getpeername01, getsockname01, socketpair01

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 09:03:15 +02:00
Michal Simek
94ad8eb854 microblaze: Detect new Microblaze 7.20 versions
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:55 +02:00
Michal Simek
f10eca6e10 microblaze: Fix do_page_fault for no context
Calling fixup when we are in kernel mode. This
prevent fault for copy_to/from_user. This fault
was find thanks to writev01/03/04 LTP tests.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:55 +02:00
Michal Simek
f14d6f7c31 microblaze: Add _PAGE_FILE macros to pgtable.h
We need to define _PAGE_FILE macro and change pte
functions. Microblaze use the same MMU as PowerPC
that's why we define _PAGE_FILE in the same style.
This change fixed remap_file_pages01 LTP test.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek
7bcb63b213 microblaze: Fix put_user macro for 64bits arguments
For 64bits arguments gcc caused that put_user macro
works with wrong value because of optimalization.
Adding volatile caused that gcc not optimized it.

It is possible to use (as Blackfin do) two put_user
macros with 32bits arguments but there is one more
instruction which is due to duplication zero return
value which is called put_user_asm macro.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek
ea3fd1466f microblaze: Clear print messages for DTB passing via r7
It is necessary to zeroed r7 when r7 points to bad
dtb - this caused that we have correct messages
about compiled-in dtb or passing via r7

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek
a69cb8c466 microblaze: Not to clear r7 after copying DTB to kernel
I can't clear r7 because if I do it I lose information
where DTB come from.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:54 +02:00
Michal Simek
74510f2a27 microblaze: Add messages about FDT blob
Print accurate message about place where FDT blob is.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
John Williams
909964ec89 microblaze: Final support for statically linked DTB
If r7 is zero at kernel boot, or does not point to a valid DTB, then
we fall back to a DTB (assumed to be) linked statically in the kernel, instead
of blindly copying bogus cruft into the kernel DTB memory region

Signed-off-by: John Williams <john.williams@petalogix.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
Huang Weiyi
1170902b34 microblaze: remove duplicated #include
Remove duplicated #include('s) in
  arch/microblaze/include/asm/io.h

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
Michal Simek
efffde36d2 microblaze: Define tlb_flush macro
This fix remove bug which we had till now in all
Microblaze MMU code. Primary tested on mmap01 LTP test.
We forget to flush invalid tlb which were changed - we
used them and there were wrong old data which wasn't correct.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-27 07:39:53 +02:00
Jaswinder Singh Rajput
40e03b581a ARM: includecheck fix: plat-stmp3xxx/pinmux.c
fix the following 'make includecheck' warning:

  arch/arm/plat-stmp3xxx/pinmux.c: linux/sysdev.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: dmitry pervushin <dpervushin@embeddedalley.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:08:24 +01:00
Jaswinder Singh Rajput
2e6e2c143c ARM: includecheck fix: plat-s3c64xx/pm.c
fix the following 'make includecheck' warning:

  arch/arm/plat-s3c64xx/pm.c: plat/regs-gpio.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:08:23 +01:00
Jaswinder Singh Rajput
efda2b4c8a ARM: includecheck fix: mach-omap2/mcbsp.c
fix the following 'make includecheck' warning:

  arch/arm/mach-omap2/mcbsp.c: mach/irqs.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:08:23 +01:00
Jaswinder Singh Rajput
52cbbd41f7 ARM: includecheck fix: mach-omap1/mcbsp.c
fix the following 'make includecheck' warning:

  arch/arm/mach-omap1/mcbsp.c: mach/irqs.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:08:22 +01:00
Jaswinder Singh Rajput
7a33aed825 ARM: includecheck fix: board-sffsdr.c
fix the following 'make includecheck' warning:

  arch/arm/mach-davinci/board-sffsdr.c: mach/common.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Philip Balister <philip@opensdr.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:02 +01:00
Jaswinder Singh Rajput
78eacf0b03 ARM: includecheck fix: board-dm646x-evm.c
fix the following 'make includecheck' warning:

  arch/arm/mach-davinci/board-dm646x-evm.c: mach/common.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:02 +01:00
Jaswinder Singh Rajput
6608168486 ARM: includecheck fix: board-dm644x-evm.c
fix the following 'make includecheck' warning:

  arch/arm/mach-davinci/board-dm644x-evm.c: mach/common.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:01 +01:00
Jaswinder Singh Rajput
7f25b0ac2d ARM: includecheck fix: board-dm355-leopard.c
fix the following 'make includecheck' warning:

  arch/arm/mach-davinci/board-dm355-leopard.c: mach/common.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:01 +01:00
Jaswinder Singh Rajput
44e96d4521 ARM: includecheck fix: board-dm355-evm.c
fix the following 'make includecheck' warning:

  arch/arm/mach-davinci/board-dm355-evm.c: mach/common.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:01 +01:00
Jaswinder Singh Rajput
feecaf73bb ARM: includecheck fix: atomic.h
fix the following 'make includecheck' warning:

  arch/arm/include/asm/atomic.h: asm/system.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:01 +01:00
Jaswinder Singh Rajput
81566a060b ARM: includecheck fix: misc.c
fix the following 'make includecheck' warning:

  arch/arm/boot/compressed/misc.c: linux/compiler.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:07:00 +01:00
Martin Schwidefsky
1277580fe5 [S390] vdso: clock_gettime of CLOCK_THREAD_CPUTIME_ID with noexec=on
The combination of noexec=on and a clock_gettime call with clock id
CLOCK_THREAD_CPUTIME_ID is broken. The vdso code switches to the
access register mode to get access to the per-cpu data structure to
execute the magic ectg instruction. After the ectg instruction the
code always switches back to the primary mode but for noexec=on the
correct mode is the secondary mode. The effect of the bug is that the
user space program looses the access to all mappings without PROT_EXEC,
e.g. the stack. The problem is fixed by restoring the mode that has
been active before the switch to the access register mode.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-07-24 12:41:02 +02:00
Heiko Carstens
3a6ba4600d [S390] vdso: fix per cpu area allocation
vdso per cpu area allocation in smp_prepare_cpus() happens with GFP_KERNEL
but irqs disabled. Triggers this one:

Badness at kernel/lockdep.c:2280
Modules linked in:
CPU: 0 Not tainted 2.6.30 #2
Process swapper (pid: 1, task: 000000003fe88000, ksp: 000000003fe87eb8)
Krnl PSW : 0400c00180000000 0000000000083360 (lockdep_trace_alloc+0xec/0xf8)
[...]
Call Trace:
([<00000000000832b6>] lockdep_trace_alloc+0x42/0xf8)
 [<00000000000b1880>] __alloc_pages_internal+0x3e8/0x5c4
 [<00000000000b1b4a>] __get_free_pages+0x3a/0xb0
 [<0000000000026546>] vdso_alloc_per_cpu+0x6a/0x18c
 [<00000000005eff82>] smp_prepare_cpus+0x322/0x594
 [<00000000005e8232>] kernel_init+0x76/0x398
 [<000000000001bb1e>] kernel_thread_starter+0x6/0xc
 [<000000000001bb18>] kernel_thread_starter+0x0/0xc

Fix this by moving the allocation out of the irqs disabled section.

Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-07-24 12:41:01 +02:00
Heiko Carstens
c63b196afc [S390] hibernation: fix register corruption on machine checks
swsusp_arch_suspend() actually saves all cpu register contents on
hibernation.
Machine checks must be disabled since swsusp_arch_suspend() stores
register contents to their lowcore save areas. That's the same
place where register contents on machine checks would be saved.
To avoid register corruption disable machine checks.
We must also disable machine checks in the new psw mask for
program checks, since swsusp_arch_suspend() may generate program
checks.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-07-24 12:41:00 +02:00
Heiko Carstens
5f954c3426 [S390] hibernation: fix lowcore handling
Our swsusp_arch_suspend() backend implementation disables prefixing
by setting the contents of the prefix register to 0.
However afterwards common code functions are called which might
access percpu data structures.
Since the lowcore contains e.g. the percpu base pointer this isn't
a good idea. So fix this by copying the hibernating cpu's lowcore to
absolute address zero.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-07-24 12:41:00 +02:00
Thomas Gleixner
d6c585a434 x86: geode: Mark mfgpt irq IRQF_TIMER to prevent resume failure
Timer interrupts are excluded from being disabled during suspend. The
clock events code manages the disabling of clock events on its own
because the timer interrupt needs to be functional before the resume
code reenables the device interrupts.

The mfgpt timer request its interrupt without setting the IRQF_TIMER
flag so suspend_device_irqs() disables it as well which results in a
fatal resume failure.

Adding IRQF_TIMER to the interupt flags when requesting the mrgpt
timer interrupt solves the problem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <new-submission>
Cc: Andres Salomon <dilinger@debian.org>
Cc: stable@kernel.org
2009-07-24 08:42:52 +02:00
Hartley Sweeten
3174c88af4 [ARM] 5611/1: ep93xx: update ts72xx nor flash support
Update the NOR flash support for TS-7200.

The TS-7200 models all have 16-bit NOR flash.  Update the platform
init to support this.

Remove the private TS72XX_NOR_* defines and use the common ep93xx
defines for the external chip select physical base address instead.

Move the NOR flash registration into a static __init function.  When
the NAND flash support is updated this function will also be used
to register the NAND flash for the TS-7250 and TS-7260.

Tested-by: Matthieu Crapet <mcrapet@gmail.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-23 10:21:24 +01:00
Nicolas Ferre
808347f6a3 dmaengine: at_hdmac: add DMA slave transfers
This patch for at_hdmac adds the slave transfers capability to the Atmel DMA
controller available on some AT91 SOCs. This allow peripheral to memory and
memory to peripheral transfers with hardware handshaking.

Slave structure for controller specific information is passed through channel
private data. This at_dma_slave structure is defined in at_hdmac.h header file
and relative hardware definition are moved to this file from at_hdmac_regs.h.
Doing this we allow the channel configuration from platform definition code.

This work is intensively based on dw_dmac and several slave implementations.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-07-22 23:15:33 -07:00
Nicolas Ferre
dc78baa2b9 dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller
This AHB DMA Controller (aka HDMA or DMAC on AT91 systems) is availlable on
at91sam9rl chip. It will be used on other products in the future.

This first release covers only the memory-to-memory tranfer type. This is the
only tranfer type supported by this chip.  On other products, it will be used
also for peripheral DMA transfer (slave API support to come).

I used dmatest client without problem in different configurations to test it.

Full documentation for this controller can be found in the SAM9RL datasheet:
http://www.atmel.com/dyn/products/product_card.asp?part_id=4243

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-07-22 22:41:27 -07:00
Mike Rapoport
1d3e216f1d [ARM] pxa/em-x270: fix compile failure when CONFIG_APM_EMULATION=n
If CONFIG_APM_EMULATION=n em-x270 build fails with linker error:

arch/arm/mach-pxa/built-in.o: In function `em_x270_battery_critical': em-x270.c:(.text+0x12c0): undefined reference to `apm_queue_event'
arch/arm/mach-pxa/built-in.o: In function `em_x270_battery_low': em-x270.c:(.text+0x12c8): undefined reference to `apm_queue_event'
make: *** [.tmp_vmlinux1] Error 1

Fix it.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-07-23 10:43:40 +08:00
Linus Torvalds
3c3301083e Merge branch 'perf-counters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-perf
* 'perf-counters-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-perf: (31 commits)
  perf_counter tools: Give perf top inherit option
  perf_counter tools: Fix vmlinux symbol generation breakage
  perf_counter: Detect debugfs location
  perf_counter: Add tracepoint support to perf list, perf stat
  perf symbol: C++ demangling
  perf: avoid structure size confusion by using a fixed size
  perf_counter: Fix throttle/unthrottle event logging
  perf_counter: Improve perf stat and perf record option parsing
  perf_counter: PERF_SAMPLE_ID and inherited counters
  perf_counter: Plug more stack leaks
  perf: Fix stack data leak
  perf_counter: Remove unused variables
  perf_counter: Make call graph option consistent
  perf_counter: Add perf record option to log addresses
  perf_counter: Log vfork as a fork event
  perf_counter: Synthesize VDSO mmap event
  perf_counter: Make sure we dont leak kernel memory to userspace
  perf_counter tools: Fix index boundary check
  perf_counter: Fix the tracepoint channel to perfcounters
  perf_counter, x86: Extend perf_counter Pentium M support
  ...
2009-07-22 11:41:56 -07:00
Jeremy Fitzhardinge
2cb078603a x86, amd: Don't probe for extended APIC ID if APICs are disabled
If we've logically disabled apics, don't probe the PCI space for the
AMD extended APIC ID.

[ Impact: prevent boot crash under Xen. ]

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Reported-by: Bastian Blank <bastian@waldi.eu.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-22 10:06:49 -07:00
Peter Zijlstra
9b7019ae6a perf_counter: Remove unused variables
Fix a gcc unused variables warning.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
2009-07-22 18:05:55 +02:00
Hidehiro Kawai
6effa8f6fc x86, mce: Rename incorrect macro name "CONFIG_X86_THRESHOLD"
CONFIG_X86_THRESHOLD used in arch/x86/kernel/irqinit.c is always
undefined.  Rename it to the correct name "CONFIG_X86_MCE_THRESHOLD".

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Reviewed-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <4A667FD4.3010509@hitachi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-21 21:43:22 -07:00
Andi Kleen
429b2b319a x86-64: Fix bad_srat() to clear all state
Need to clear both nodes and nodes_add state for start/end.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
LKML-Reference: <20090718065657.GA2898@basil.fritz.box>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: stable@kernel.org
2009-07-21 15:20:01 -07:00
Jan Beulich
e9084ec98b x86, mce: Fix set_trigger() accessor
Fix the condition checking the result of strchr() (which previously
could result in an oops), and make the function return the number of
bytes actively used.

[ Impact: fix oops ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <4A5F04B7020000780000AB59@vpn.id2.novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-21 10:49:18 -07:00
H. Peter Anvin
ebe119cd09 x86: Fix movq immediate operand constraints in uaccess.h
The movq instruction, generated by __put_user_asm() when used for
64-bit data, takes a sign-extended immediate ("e") not a zero-extended
immediate ("Z").

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: stable@kernel.org
2009-07-20 23:27:39 -07:00
Uros Bizjak
155b735295 x86: Fix movq immediate operand constraints in uaccess_64.h
arch/x86/include/asm/uaccess_64.h uses wrong asm operand constraint
("ir") for movq insn. Since movq sign-extends its immediate operand,
"er" constraint should be used instead.

Attached patch changes all uses of __put_user_asm in uaccess_64.h to use
"er" when "q" insn suffix is involved.

Patch was compile tested on x86_64 with defconfig.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: stable@kernel.org
2009-07-20 20:46:17 -07:00
Denis Turischev
77f32dfdd9 x86: Add reboot fixup for SBC-fitPC2
The CompuLab SBC-fitPC2 board needs to reboot via BIOS.

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-20 18:38:14 -07:00
Linus Torvalds
aea1f7964a Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  vmlinux.lds.h: restructure BSS linker script macros
  kconfig: initialize the screen before using curses(3) functions
  kconfig: variable argument lists needs `stdarg.h'
  kbuild, deb-pkg: fix install scripts for posix sh
2009-07-20 16:49:45 -07:00
Linus Torvalds
ae42b9e1ca Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (21 commits)
  Blackfin: define HARDIRQ_BITS again for now
  arch/blackfin: Add kmalloc NULL tests
  Blackfin: add CPLB entries for Core B on-chip L1 SRAM regions
  Blackfin: work around anomaly 05000189
  Blackfin: drop per-cpu loops_per_jiffy tracking
  Blackfin: fix bugs in GPIO resume code
  Blackfin: bf537-stamp: fix irq decl for AD7142
  Blackfin: fix handling of IPEND in interrupt context save
  Blackfin: drop duplicate runtime checking of anomaly 05000448
  Blackfin: fix incomplete renaming of the bfin-twi-lcd driver
  Blackfin: fix wrong CTS inversion
  Blackfin: update handling of anomaly 364 (wrong rev id in BF527-0.1)
  Blackfin: fix early_dma_memcpy() handling of busy channels
  Blackfin: handle BF561 Core B memory regions better when SMP=n
  Blackfin: fix miscompilation in lshrdi3
  Blackfin: fix silent crash when no uClinux MTD filesystem exists
  Blackfin: restore exception banner when dumping crash info
  Blackfin: work around anomaly 05000281
  Blackfin: update anomaly lists to match latest sheets/usage
  Blackfin: drop dead flash_probe call
  ...
2009-07-20 16:46:49 -07:00
Sonic Zhang
0ecf24ef49 blackfin: fix wrong CTS inversion
The Blackfin serial headers were inverting the CTS value leading to wrong
handling of the CTS line which broke CTS/RTS handling completely.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-20 16:38:44 -07:00
Linus Torvalds
a7571a5c88 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Realview & Versatile: Fix i2c_board_info definitions
  [ARM] 5608/1: Updated U300 defconfig
  [ARM] 5606/1: Fix ep93xx watchdog driver headers
  [ARM] 5594/1: Correct U300 VIC init PM setting
  [ARM] 5595/1: ep93xx: missing header in dma-m2p.c
  [ARM] Kirkwood: Correct header define
  [ARM] pxa: fix ULPI_{DIR,NXT,STP} MFP defines
  backlight: fix pwm_bl.c to notify platform code when suspending
  [ARM] pxa: use kzalloc() in pxa_init_gpio_chip()
  [ARM] pxa: correct I2CPWR clock for pxa3xx
  pxamci: correct DMA flow control
  ARM: add support for the EET board, based on the i.MX31 pcm037 module
  pcm037: add MT9T031 camera support
  Armadillo 500 add NAND flash device support (resend).
  ARM MXC: Armadillo 500 add NOR flash device support (resend).
  mx31: remove duplicated #include
2009-07-18 11:59:33 -07:00
Russell King
64e8be6ebd ARM: Realview & Versatile: Fix i2c_board_info definitions
Fix i2c_board_info definitions - we were defining the 'type' field
of these structures twice since the first argument of I2C_BOARD_INFO
sets this field.  Move the second definition into I2C_BOARD_INFO().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Ben Dooks <ben-linux@fluff.org>
2009-07-18 17:08:59 +01:00
Catalin Marinas
8bcdbe4279 x86: Include all of .data.* sections in _edata on 64-bit
The .data.read_mostly and .data.cacheline_aligned sections
aren't covered by the _sdata .. _edata range on x86-64. This
affects kmemleak reporting leading to possible false
positives by not scanning the whole data section.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Alexey Fisher <bug-track@fisher-privat.net>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
LKML-Reference: <1247565175.28240.37.camel@pc1117.cambridge.arm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
2009-07-18 13:59:20 +02:00
Alexey Fisher
6aa542a694 x86: Add quirk for Intel DG45ID board to avoid low memory corruption
AMI BIOS with low memory corruption was found on Intel DG45ID
board (Bug 13710). Add this board to the blacklist - in the
(somewhat optimistic) hope of future boards/BIOSes from Intel
not having this bug.

Also see:

  http://bugzilla.kernel.org/show_bug.cgi?id=13736

Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net>
Cc: ykzhao <yakui.zhao@intel.com>
Cc: alan@lxorguk.ukuu.org.uk
Cc: <stable@kernel.org>
LKML-Reference: <1247660169-4503-1-git-send-email-bug-track@fisher-privat.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-18 13:38:29 +02:00
Marek Vasut
ecf763c567 [ARM] pxa: add STUART MFP config for PalmTX,T5,LD
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-07-18 10:01:30 +08:00
Haojian Zhuang
eb9069119d [ARM] pxa: fix gpio issue in zylonite
WARNING: at drivers/gpio/gpiolib.c:83 gpio_ensure_requested+0x58/0xbc()
 autorequest GPIO-71
 Modules linked in:
 [<c0028bd0>] (unwind_backtrace+0x0/0xe8) from [<c003c328>] (warn_slowpath_common+0x48/0x78)
 [<c003c328>] (warn_slowpath_common+0x48/0x78) from [<c003c394>] (warn_slowpath_fmt+0x28/0x38)
 [<c003c394>] (warn_slowpath_fmt+0x28/0x38) from [<c0146128>] (gpio_ensure_requested+0x58/0xbc)
 [<c0146128>] (gpio_ensure_requested+0x58/0xbc) from [<c0146308>] (gpio_direction_input+0x80/0xf4)
 [<c0146308>] (gpio_direction_input+0x80/0xf4) from [<c000c668>] (zylonite_pxa300_init+0x108/0x214)
 [<c000c668>] (zylonite_pxa300_init+0x108/0x214) from [<c000c4e4>] (zylonite_init+0x8/0x84)
 [<c000c4e4>] (zylonite_init+0x8/0x84) from [<c00097cc>] (customize_machine+0x18/0x24)
 [<c00097cc>] (customize_machine+0x18/0x24) from [<c00222e0>] (do_one_initcall+0x30/0x1b0)
 [<c00222e0>] (do_one_initcall+0x30/0x1b0) from [<c00083f4>] (kernel_init+0xa4/0x11c)
 [<c00083f4>] (kernel_init+0xa4/0x11c) from [<c0023f3c>] (kernel_thread_exit+0x0/0x8)
 ---[ end trace 1b75b31a2719ed1c ]---

This issue is caused by using gpio pin without request. Add gpio_request()
into zylonite. To simplify the code, error checking is omitted since this
is being performed early.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-07-18 10:00:08 +08:00
Tim Abbott
04e448d9a3 vmlinux.lds.h: restructure BSS linker script macros
The BSS section macros in vmlinux.lds.h currently place the .sbss
input section outside the bounds of [__bss_start, __bss_end].  On all
architectures except for microblaze that handle both .sbss and
__bss_start/__bss_end, this is wrong: the .sbss input section is
within the range [__bss_start, __bss_end].  Relatedly, the example
code at the top of the file actually has __bss_start/__bss_end defined
twice; I believe the right fix here is to define them in the
BSS_SECTION macro but not in the BSS macro.

Another problem with the current macros is that several
architectures have an ALIGN(4) or some other small number just before
__bss_stop in their linker scripts.  The BSS_SECTION macro currently
hardcodes this to 4; while it should really be an argument.  It also
ignores its sbss_align argument; fix that.

mn10300 is the only user at present of any of the macros touched by
this patch.  It looks like mn10300 actually was incorrectly converted
to use the new BSS() macro (the alignment of 4 prior to conversion was
a __bss_stop alignment, but the argument to the BSS macro is a start
alignment).  So fix this as well.

I'd like acks from Sam and David on this one.  Also CCing Paul, since
he has a patch from me which will need to be updated to use
BSS_SECTION(0, PAGE_SIZE, 4) once this gets merged.

Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-07-18 00:02:45 +02:00
Linus Torvalds
a1cc1ba7ae Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/fyu/linux-2.6:
  Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h"
  Add dma_debug_init() for ia64
  Fix ia64 compilation IS_ERR and PTE_ERR errors.
2009-07-17 11:15:00 -07:00
Linus Torvalds
499ee0710f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/pci: insert ioapic resource before assigning unassigned resources
2009-07-17 10:51:55 -07:00
Aurelien Jarno
18282b36d7 Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h"
asm/fpu.h uses the __IA64_UL macro which is declared in asm/types.h, so
this include is really required. Without it, GNU libc fails to build.

This reverts commit 2678c07b07.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
2009-07-17 06:35:05 -07:00
fujita
390bd132b2 Add dma_debug_init() for ia64
The commit 9916219579 was supposed to
add CONFIG_DMA_API_DEBUG support to IA64 however I forgot to add
dma_debug_init().

Signed-off-by: fujita <fujita@tulip.osrg.net>
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
2009-07-17 06:34:57 -07:00
Fenghua Yu
6f40946121 Fix ia64 compilation IS_ERR and PTE_ERR errors.
When building ia64 kernel with CONFIG_XEN_SYS_HYPERVISOR, compiler reports
errors:

drivers/xen/sys-hypervisor.c: In function ‘uuid_show’:
drivers/xen/sys-hypervisor.c:125: error: implicit declaration of function ‘IS_ERR’
drivers/xen/sys-hypervisor.c:126: error: implicit declaration of function ‘PTR_ERR’

This patch fixes the errors.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
2009-07-17 06:34:50 -07:00
Linus Walleij
d740d347f8 [ARM] 5608/1: Updated U300 defconfig
Removed the LBD support that isn't of any use right now at least,
then remove remnants of the TCM config flags that somehow crept
in by mistake (not yet merged patch for 2.6.32) and then the usual
defconfig noise from updated menus.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-17 13:38:56 +01:00
Rusty Russell
7a5049205f lguest: restrict CPUID to avoid perf counter wrmsr
Avoid the following:
[    0.012093] WARNING: at arch/x86/kernel/apic/apic.c:249 native_apic_write_dummy+0x2f/0x40()

Rather than chase each new cpuid-detected feature, just lie about the highest
valid CPUID so this code is never run.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17 21:47:45 +09:30
Matias Zabaljauregui
5780888bca lguest: fix journey
fix: "make Guest" was complaining about duplicated G:032

Signed-off-by: Matias Zabaljauregui <zabaljauregui@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-07-17 21:47:44 +09:30
Mike Frysinger
6843f405da Blackfin: define HARDIRQ_BITS again for now
The default values of HARDIRQ_BITS and PREEMPT_BITS in common code leads to
build failure:

In file included from include/linux/interrupt.h:12,
                from include/linux/kernel_stat.h:8,
                from arch/blackfin/kernel/asm-offsets.c:32:
include/linux/hardirq.h:66:2: error: #error PREEMPT_ACTIVE is too low!

So until that gets resolved, just declare our own default value again.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 13:56:07 -04:00
Julia Lawall
994e9a2e01 arch/blackfin: Add kmalloc NULL tests
Check that the result of kmalloc is not NULL before passing it to other
functions.

In the first two cases, the new code returns -ENOMEM, which seems
compatible with what is done for similar functions for other architectures.

In the last two cases, the new code fails silently, ie just returns,
because the function has void return type.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
    when != x != NULL
    when != (x || ...)
(
kfree(x)
|
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:54 -04:00
Graf Yang
5bc6e3cfe6 Blackfin: add CPLB entries for Core B on-chip L1 SRAM regions
The Blackfin SMP port was missing CPLB entries for Core B on-chip L1 SRAM
regions.  Any code that attempted to use these would wrongly crash due to
a CPLB miss.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:51 -04:00
Robin Getz
f574a76a3b Blackfin: work around anomaly 05000189
Similar to anomaly 05000281 but not as bad, we cannot return to the
instruction causing a fault otherwise we'll trigger a second false
exception.  The system can still recover, but it isn't correct.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:48 -04:00
Michael Hennerich
c70c754ff9 Blackfin: drop per-cpu loops_per_jiffy tracking
On Blackfin SMP, a per-cpu loops_per_jiffy is pointless since both cores
always run at the same CCLK.  In addition, the current implementation has
flaws since the main consumer for loops_per_jiffy (asm/delay.h) uses the
global kernel loops_per_jiffy and not the per_cpu one.  So punt all of the
per-cpu handling and go back to the global shared one.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:44 -04:00
Michael Hennerich
c03c2a8734 Blackfin: fix bugs in GPIO resume code
Change the bfin_gpio_pm_hibernate_restore() function to:
1) AND restored DATA with DIR (not OR) to get correct final state
2) Restore DATA before setting DIR to avoid glitches

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:42 -04:00
Barry Song
4c94c3e09a Blackfin: bf537-stamp: fix irq decl for AD7142
The AD7142 add-on card hooks the IRQ line up to PG5, not PF5.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:40 -04:00
Robin Getz
ad863a9dc9 Blackfin: fix handling of IPEND in interrupt context save
The interrupt context save logic incorrectly stored the address of the
IPEND register rather than its value due to a missing dereference.  While
we're here, also enable this code for all kernel debugging scenarios and
not just when KGDB is enabled.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:38 -04:00
Robin Getz
3a920accbb Blackfin: drop duplicate runtime checking of anomaly 05000448
We already catch this anomaly at compile time, and the runtime version is
such that it ends up checking on all parts rather than just the ones that
might actually have it.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:34 -04:00
Michael Hennerich
ebd5833327 Blackfin: fix incomplete renaming of the bfin-twi-lcd driver
The sed used to rename the bfin-twi-lcd only replaced the first instance
rather than all which led to the resources not being enabled when the
driver was built as a module.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:32 -04:00
Sonic Zhang
f1c717fbf8 Blackfin: fix wrong CTS inversion
The Blackfin serial headers were inverting the CTS value leading to wrong
handling of the CTS line which broke CTS/RTS handling completely.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:30 -04:00
Graf Yang
10a5ecd03f Blackfin: update handling of anomaly 364 (wrong rev id in BF527-0.1)
This anomaly only applies to the BF527-0.1, not the BF526-0.1, and not any
other revision of the BF527.  So make sure we don't go returning 0xffff
for other cases.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:28 -04:00
Mike Frysinger
532f07ca04 Blackfin: fix early_dma_memcpy() handling of busy channels
The early logic to locate a free DMA channel and then set it up was broken
in a few ways that only manifested itself when we needed to set up more
than 2 on chip SRAM regions (most board defaults setup 1 or 2).  First, we
checked the wrong status register (the destination gets updated, not the
source) and second, we did the ssync before rather than after resetting a
DMA config register.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:26 -04:00
Mike Frysinger
fb4b5d3a37 Blackfin: handle BF561 Core B memory regions better when SMP=n
Rather than assume Core B is always run with caches turned on, let people
load into any of the on-chip memory regions.  It is their business how the
SRAM/Cache regions are utilized, so don't prevent them from being able to
load into them.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:24 -04:00
Jie Zhang
8399a74f61 Blackfin: fix miscompilation in lshrdi3
The code used in the Blackfin lshrdi3 utilizes gcc constructs.  However,
the structures declared don't line up with the code gcc generates, so
under certain optimizations, we get bad code and things crap out in fun
random ways.  So rather than trying to maintain different gcc definitions
ourselves, just use the ones available in gcclib.h.

URL: http://blackfin.uclinux.org/gf/tracker/5286
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:23 -04:00
Robin Getz
dc437b1b59 Blackfin: fix silent crash when no uClinux MTD filesystem exists
Since we need to relocate the attached filesystem with the uClinux MTD map
(to handle some anomalies), we need to know its real filesize.  If we boot
a kernel without a filesystem actually attached, we end up blindly reading
and copying garbage (since there is no magic value to detect validity).
Often times this results in an early crash and no output.  So add a few
basic sanity checks before operating on things to catch the majority of
cases.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:21 -04:00
Mike Frysinger
15627bd35c Blackfin: restore exception banner when dumping crash info
Previous unification code put the exception banner behind the "is oops"
logic when it should have been printed all the time.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:20 -04:00
Robin Getz
0e4edcf0b0 Blackfin: work around anomaly 05000281
Add missing anomaly workaround for anomaly 05000281 - we can't return to
instructions which cause hardware errors otherwise we trigger the error
again which means we go into an infinite loop of handling, returning, and
retriggering.  This work around confuses gdb when the error occurs as the
PC will seemed to have moved, so a better long term fix will need to be
figured out, but for now this is better than an infinite crash loop.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:19 -04:00
Graf Yang
976119bc5d Blackfin: update anomaly lists to match latest sheets/usage
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:52:17 -04:00
Mike Frysinger
b2dc0a0884 Blackfin: drop dead flash_probe call
There are no CONFIG_{BLK,CHR}_DEV_FLASH Kconfig options, and there is no
flash_probe() function, so not really sure what this code is all about.
Seems to be dead code that stretches way back to the start of the Blackfin
port.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:39:45 -04:00
Robin Getz
1997660cea Blackfin: cleanup code a bit with comments and defines
Improve the assembly with a few explanatory comments and use symbolic
defines rather than numeric values for bit positions.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-07-16 01:39:39 -04:00
Johannes Berg
1dacc76d00 net/compat/wext: send different messages to compat tasks
Wireless extensions have the unfortunate problem that events
are multicast netlink messages, and are not independent of
pointer size. Thus, currently 32-bit tasks on 64-bit platforms
cannot properly receive events and fail with all kinds of
strange problems, for instance wpa_supplicant never notices
disassociations, due to the way the 64-bit event looks (to a
32-bit process), the fact that the address is all zeroes is
lost, it thinks instead it is 00:00:00:00:01:00.

The same problem existed with the ioctls, until David Miller
fixed those some time ago in an heroic effort.

A different problem caused by this is that we cannot send the
ASSOCREQIE/ASSOCRESPIE events because sending them causes a
32-bit wpa_supplicant on a 64-bit system to overwrite its
internal information, which is worse than it not getting the
information at all -- so we currently resort to sending a
custom string event that it then parses. This, however, has a
severe size limitation we are frequently hitting with modern
access points; this limitation would can be lifted after this
patch by sending the correct binary, not custom, event.

A similar problem apparently happens for some other netlink
users on x86_64 with 32-bit tasks due to the alignment for
64-bit quantities.

In order to fix these problems, I have implemented a way to
send compat messages to tasks. When sending an event, we send
the non-compat event data together with a compat event data in
skb_shinfo(main_skb)->frag_list. Then, when the event is read
from the socket, the netlink code makes sure to pass out only
the skb that is compatible with the task. This approach was
suggested by David Miller, my original approach required
always sending two skbs but that had various small problems.

To determine whether compat is needed or not, I have used the
MSG_CMSG_COMPAT flag, and adjusted the call path for recv and
recvfrom to include it, even if those calls do not have a cmsg
parameter.

I have not solved one small part of the problem, and I don't
think it is necessary to: if a 32-bit application uses read()
rather than any form of recvmsg() it will still get the wrong
(64-bit) event. However, neither do applications actually do
this, nor would it be a regression.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-15 08:53:39 -07:00
Andreas Schwab
0115cb544b powerpc: Fix another bug in move of altivec code to vector.S
When moving load_up_altivec to vector.S a typo in a comment caused a
thinko setting the wrong variable.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-15 17:41:46 +10:00
Dave Kleikamp
28477fb1ed powerpc: Fix booke user_disable_single_step()
On booke processors, gdb is seeing spurious SIGTRAPs when setting a
watchpoint.

user_disable_single_step() simply quits when the DAC is non-zero.  It should
be clearing the DBCR0_IC and DBCR0_BT bits from the dbcr0 register and
TIF_SINGLESTEP from the thread flag.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-15 17:41:45 +10:00
Linus Torvalds
5be6717e0d Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix warning in pvclock.c
  x86, apic: Fix false positive section mismatch in numaq_32.c
  x86: Fix false positive section mismatch in es7000_32.c
  x86: Remove spurious printk level from segfault message
2009-07-14 18:35:11 -07:00
Dave Jones
2ad76643ff x86: Fix warning in pvclock.c
when building 32-bit, I see this ..
arch/x86/kernel/pvclock.c:63:7: warning: "__x86_64__" is not defined

Signed-off-by: Dave Jones <davej@redhat.com>
LKML-Reference: <20090713201437.GA12165@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-07-14 16:25:05 +02:00
Linus Torvalds
a4dc32374e Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  wm97xx_batery: replace driver_data with dev_get_drvdata()
  omap: video: remove direct access of driver_data
  Sound: remove direct access of driver_data
  driver model: fix show/store prototypes in doc.
  Firmware: firmware_class, fix lock imbalance
  Driver Core: remove BUS_ID_SIZE
  sparc: remove driver-core BUS_ID_SIZE
  partitions: fix broken uevent_suppress conversion
  devres: WARN() and return, don't crash on device_del() of uninitialized device
2009-07-13 10:24:08 -07:00
Huang Weiyi
5fddcdb70f mn10300: remove duplicated #include
Remove duplicated #include('s) in
  arch/mn10300/kernel/sys_mn10300.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-13 09:09:08 -07:00
Rakib Mullick
7473727be8 x86, apic: Fix false positive section mismatch in numaq_32.c
The variable apic_numaq placed in noninit section references the
function wakeup_secondary_cpu_via_nmi(), which is in __cpuinit
section. Thus causes a section mismatch warning. To avoid such
mismatch we mark apic_numaq as __refdata.

We were warned by the following warning:

  WARNING: arch/x86/kernel/built-in.o(.data+0x932c): Section mismatch in
  reference from the variable apic_numaq to the function
  .cpuinit.text:wakeup_secondary_cpu_via_nmi()

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
LKML-Reference: <b9df5fa10907120407p6b4f67dtf4d563155488188a@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-13 11:03:27 +02:00
Rakib Mullick
151586d0f7 x86: Fix false positive section mismatch in es7000_32.c
The variable apic_es7000_cluster references the function __cpuinit
wakeup_secondary_cpu_via_mip() from a noninit section. So we've been
warned by the following warning. To avoid possible collision between
init/noninit, its best to mark the variable as __refdata.

We were warned by the following warning:

  LD      arch/x86/kernel/apic/built-in.o
  WARNING: arch/x86/kernel/apic/built-in.o(.data+0x198c): Section
  mismatch in reference from the variable apic_es7000_cluster to the
  function .cpuinit.text:wakeup_secondary_cpu_via_mip()

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
LKML-Reference: <b9df5fa10907120404k6279a10ch5e9682432272706f@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-13 11:03:26 +02:00
Daniel Qarras
f1c6a58121 perf_counter, x86: Extend perf_counter Pentium M support
I've attached a patch to remove the Pentium M special casing of
EMON and as noticed at least with my Pentium M the hardware PMU
now works:

 Performance counter stats for '/bin/ls /var/tmp':

       1.809988  task-clock-msecs         #      0.125 CPUs
              1  context-switches         #      0.001 M/sec
              0  CPU-migrations           #	 0.000 M/sec
            224  page-faults              #	 0.124 M/sec
        1425648  cycles                   #    787.656 M/sec
         912755  instructions             #	 0.640 IPC

Vince suggested that this code was trying to address erratum
Y17 in Pentium-M's:

  http://download.intel.com/support/processors/mobile/pm/sb/25266532.pdf

But that erratum (related to IA32_MISC_ENABLES.7) does not
affect perfcounters as we dont use this toggle to disable RDPMC
and WRMSR/RDMSR access to performance counters. We keep cr4's
bit 8 (X86_CR4_PCE) clear so unprivileged RDPMC access is not
allowed anyway.

Cc: Vince Weaver <vince@deater.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@googlemail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-13 08:46:51 +02:00
Kay Sievers
08f42877af sparc: remove driver-core BUS_ID_SIZE
The name size limit is gone from the driver-core, the BUS_ID_SIZE
value will be removed.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-07-12 13:02:09 -07:00
Alexey Dobriyan
405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Roland Dreier
a1a08d1cb0 x86: Remove spurious printk level from segfault message
Since commit 5fd29d6c ("printk: clean up handling of log-levels
and newlines"), the kernel logs segfaults like:

    <6>gnome-power-man[24509]: segfault at 20 ip 00007f9d4950465a sp 00007fffbb50fc70 error 4 in libgobject-2.0.so.0.2103.0[7f9d494f7000+45000]

with the extra "<6>" being KERN_INFO.  This happens because the
printk in show_signal_msg() started with KERN_CONT and then
used "%s" to pass in the real level; and KERN_CONT is no longer
an empty string, and printk only pays attention to the level at
the very beginning of the format string.

Therefore, remove the KERN_CONT from this printk, since it is
now actively causing problems (and never really made any
sense).

Signed-off-by: Roland Dreier <roland@digitalvampire.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <874otjitkj.fsf@shaolin.home.digitalvampire.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-11 09:56:19 +02:00
Linus Torvalds
eee33abe59 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] define KTIME_SCALAR for 32-bit s390
  [S390] add generic atomic64 support for 31 bit
  [S390] improve suspend/resume error messages
  [S390] set SCHED_OMIT_FRAME_POINTER for s390
  [S390] add __ucmpdi2() helper function
  [S390] perf_counter build fix
  [S390] shutdown actions: save/return rc from init function
  [S390] dasd: correct debugfeature sense dump
  [S390] udelay: disable lockdep to avoid false positives
  [S390] monreader: fix dev_set_drvdata conversion
  [S390] sclp: fix compile error for !SCLP_CONSOLE
2009-07-10 19:12:51 -07:00
Linus Torvalds
69ca06c945 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cfq-iosched: reset oom_cfqq in cfq_set_request()
  block: fix sg SG_DXFER_TO_FROM_DEV regression
  block: call blk_scsi_ioctl_init()
  Fix congestion_wait() sync/async vs read/write confusion
2009-07-10 14:29:58 -07:00
Linus Torvalds
ac3f482236 Merge branch 'core-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  dma-debug: Fix the overlap() function to be correct and readable
  oprofile: reset bt_lost_no_mapping with other stats
  x86/oprofile: rename kernel parameter for architectural perfmon to arch_perfmon
  signals: declare sys_rt_tgsigqueueinfo in syscalls.h
  rcu: Mark Hierarchical RCU no longer experimental
  dma-debug: Put all hash-chain locks into the same lock class
  dma-debug: fix off-by-one error in overlap function
2009-07-10 14:25:59 -07:00
Linus Torvalds
85be928c41 Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  perf report: Add "Fractal" mode output - support callchains with relative overhead rate
  perf_counter tools: callchains: Manage the cumul hits on the fly
  perf report: Change default callchain parameters
  perf report: Use a modifiable string for default callchain options
  perf report: Warn on callchain output request from non-callchain file
  x86: atomic64: Inline atomic64_read() again
  x86: atomic64: Clean up atomic64_sub_and_test() and atomic64_add_negative()
  x86: atomic64: Improve atomic64_xchg()
  x86: atomic64: Export APIs to modules
  x86: atomic64: Improve atomic64_read()
  x86: atomic64: Code atomic(64)_read and atomic(64)_set in C not CPP
  x86: atomic64: Fix unclean type use in atomic64_xchg()
  x86: atomic64: Make atomic_read() type-safe
  x86: atomic64: Reduce size of functions
  x86: atomic64: Improve atomic64_add_return()
  x86: atomic64: Improve cmpxchg8b()
  x86: atomic64: Improve atomic64_read()
  x86: atomic64: Move the 32-bit atomic64_t implementation to a .c file
  x86: atomic64: The atomic64_t data type should be 8 bytes aligned on 32-bit too
  perf report: Annotate variable initialization
  ...
2009-07-10 14:25:03 -07:00
Peter Zijlstra
c99e6efe1b sched: INIT_PREEMPT_COUNT
Pull the initial preempt_count value into a single
definition site.

Maintainers for: alpha, ia64 and m68k, please have a look,
your arch code is funny.

The header magic is a bit odd, but similar to the KERNEL_DS
one, CPP waits with expanding these macros until the
INIT_THREAD_INFO macro itself is expanded, which is in
arch/*/kernel/init_task.c where we've already included
sched.h so we're good.

Cc: tony.luck@intel.com
Cc: rth@twiddle.net
Cc: geert@linux-m68k.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-10 14:24:05 -07:00
Yinghai Lu
857fdc53a0 x86/pci: insert ioapic resource before assigning unassigned resources
Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?)

Dann bisected it down to:
  commit 30a18d6c3f
  Date:   Tue Feb 19 03:21:20 2008 -0800

      x86: multi pci root bus with different io resource range, on
      64-bit

It turns out that:
  1. that AMD-based systems have two HT chains.
  2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc
  3. that multi-peer-root patch will try to split root resources to peer
     root resources according to PCI conf of NB
  4. PCI core assigns unassigned resources, but they overlap with BARs
     that are used by ioapic addr of io4 and 8132.

The reason: at that point ioapic address are not inserted yet.  Solution
is to insert ioapic resources into the tree a bit earlier.

Reported-by: Stephen Frost <sfrost@snowman.net>
Reported-and-Tested-by: dann frazier <dannf@hp.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Jesse Barnes <jbarnes@jbarnes-g45.(none)>
2009-07-10 13:03:14 -07:00
Jens Axboe
8aa7e847d8 Fix congestion_wait() sync/async vs read/write confusion
Commit 1faa16d228 accidentally broke
the bdi congestion wait queue logic, causing us to wait on congestion
for WRITE (== 1) when we really wanted BLK_RW_ASYNC (== 0) instead.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-07-10 20:31:53 +02:00
Peter Zijlstra
984b838ce6 perf_counter: Clean up global vs counter enable
Ingo noticed that both AMD and P6 call
x86_pmu_disable_counter() on *_pmu_enable_counter(). This is
because we rely on the side effect of that call to program
the event config but not touch the EN bit.

We change that for AMD by having enable_all() simply write
the full config in, and for P6 by explicitly coding it.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-10 10:28:29 +02:00
Peter Zijlstra
9c74fb5086 perf_counter: Fix up P6 PMU details
The P6 doesn't seem to support cache ref/hit/miss counts, so
we extend the generic hardware event codes to have 0 and -1
mean the same thing as for the generic cache events.

Furthermore, it turns out the 0 event does not count
(that is, its reported that on PPro it actually does count
something), therefore use a event configuration that's
specified not to count to disable the counters.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-10 10:28:27 +02:00
Vince Weaver
11d1578f94 perf_counter: Add P6 PMU support
Add basic P6 PMU support. The P6 uses the EVNTSEL0 EN bit to
enable/disable both its counters. We use this for the
global enable/disable, and clear all config bits (except EN)
to disable individual counters.

Actual ia32 hardware doesn't support lfence, so use a locked
op without side-effect to implement a full barrier.

perf stat and perf record seem to function correctly.

[a.p.zijlstra@chello.nl: cleanups and complete the enable/disable code]

Signed-off-by: Vince Weaver <vince@deater.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <Pine.LNX.4.64.0907081718450.2715@pianoman.cluster.toy>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-10 10:28:26 +02:00
Linus Torvalds
e864561c12 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits)
  cxgb3: Fix crash caused by stashing wrong netdev_queue
  ixgbe: Fix coexistence of FCoE and Flow Director in 82599
  memory barrier: adding smp_mb__after_lock
  net: adding memory barrier to the poll and receive callbacks
  netpoll: Fix carrier detection for drivers that are using phylib
  includecheck fix: include/linux, rfkill.h
  p54: tx refused but queue active
  Atheros Kconfig needs to be dependent on WLAN_80211
  mac80211: fix docbook
  mac80211_hwsim: avoid NULL access
  ssb: Add support for 4318E
  b43: Add support for 4318E
  zd1211rw: adding SONY IFU-WLM2 (054c:0257) as a zd1211b device
  zd1211rw: 07b8:6001 is a ZD1211B
  r6040: bump driver version to 0.24 and date to 08 July 2009
  r6040: restore MIER register correctly when IRQ line is shared
  ipv4: Fix fib_trie rebalancing, part 4 (root thresholds)
  davinci_emac: fix kernel oops when changing MAC address while interface is down
  igb: set lan id prior to configuring phy
  mac80211: minstrel: avoid accessing negative indices in rix_to_ndx()
  ...
2009-07-09 20:33:18 -07:00
Robert Richter
8d7ff4f2a0 x86/oprofile: rename kernel parameter for architectural perfmon to arch_perfmon
The short name of the achitecture is 'arch_perfmon'. This patch
changes the kernel parameter to use this name.

Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-10 05:22:50 +02:00
David S. Miller
e5a8a896f5 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-09 20:18:24 -07:00
Jiri Olsa
ad46276952 memory barrier: adding smp_mb__after_lock
Adding smp_mb__after_lock define to be used as a smp_mb call after
a lock.

Making it nop for x86, since {read|write|spin}_lock() on x86 are
full memory barriers.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-09 17:06:58 -07:00
Linus Walleij
6860107a46 [ARM] 5594/1: Correct U300 VIC init PM setting
This makes the VIC resume from suspend flagged IRQ:s identical to
the flags indicating all possible interrupts. This is perhaps not
the optimal setting but setting it to 0 makes the system suspend
and never come back again (all IRQ sources masked off).

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-09 16:15:46 +01:00
Hartley Sweeten
a0b98ec87d [ARM] 5595/1: ep93xx: missing header in dma-m2p.c
<linux/io.h> was getting included by <mach/ts72xx.h>, is should be
included by this file.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-09 16:11:48 +01:00
Russell King
39bd8064ab Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 2009-07-09 16:08:59 +01:00
Russell King
db78450abd Merge branch 'for-rmk' of git://git.marvell.com/orion 2009-07-09 16:08:14 +01:00
Russell King
4e66a0f536 Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2009-07-09 16:07:22 +01:00
Yinghai Lu
44b5728095 x86: don't clear nodes_states[N_NORMAL_MEMORY] when numa is not compiled in
Alex found that specjbb2005 still can not run with hugepages on an
x86-64 machine.  This only happens when numa is not compiled in.

The root cause: node_set_state will not set it back for us in that case,
so don't clear that when numa is not select in config

[ v2: use node_clear_state instead ]
Reported-and-Tested-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-08 10:32:50 -07:00
Joe Perches
ad361c9884 Remove multiple KERN_ prefixes from printk formats
Commit 5fd29d6ccb ("printk: clean up
handling of log-levels and newlines") changed printk semantics.  printk
lines with multiple KERN_<level> prefixes are no longer emitted as
before the patch.

<level> is now included in the output on each additional use.

Remove all uses of multiple KERN_<level>s in formats.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-08 10:30:03 -07:00
Linus Torvalds
b4b21cac88 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Powernow-k8: support family 0xf with 2 low p-states
  [CPUFREQ] fix (utter) cpufreq_add_dev mess
  [CPUFREQ] Cleanup locking in conservative governor
  [CPUFREQ] Cleanup locking in ondemand governor
  [CPUFREQ] Mark policy_rwsem as going static in cpufreq.c wont be exported
  [CPUFREQ] Eliminate the recent lockdep warnings in cpufreq
2009-07-08 09:36:46 -07:00
Linus Torvalds
ed7ba2ef09 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Clear -EAGAIN in dpm_prepare
  x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR
2009-07-08 09:35:22 -07:00
Linus Torvalds
d6d4655172 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Don't use alloc_bootmem() in init_IRQ() path
  powerpc: Fix spin_event_timeout() to be robust over context switches
  powerpc: Use pr_devel() in do_dcache_icache_coherency()
  powerpc/cell: Use pr_devel() in axon_msi.c
  powerpc: Use pr_devel() in arch/powerpc/mm/gup.c
  powerpc: Cleanup & use pr_devel() in arch/powerpc/mm/slb.c
  powerpc/perf_counter: Remove duplicated #include
  powerpc: Use pr_devel() in arch/powerpc/mm/mmu_context_nohash.c
  powerpc/pseries: Use pr_devel() in xics.c
  powerpc: Remove unnecessary semicolons
  powerpc/pseries: Use pr_devel() in pseries LPAR HPTE routines
  powerpc/44x: Fix build error with -Werror for Warp platform
  powerpc/4xx: Have Warp take advantage of GPIO LEDs default-state = keep
  powerpc/44x: Update Warp defconfig
2009-07-08 09:32:20 -07:00
Linus Torvalds
622f8061a6 Merge branch 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  serial: sh-sci: fix sci interrupt handler
  video: hitfb: Move over to dev_pm_ops.
  video: hitfb: Convert to framebuffer_alloc().
  video: sh_mobile_lcdcfb: Convert to framebuffer_alloc().
  sh: add r8a66597 usb0 host to the se7724 board
  usb: allow sh7724 to enable on-chip r8a66597
  sh-sci: update receive error handling for muxed irqs
  sh: define PERF_COUNTER_INDEX_OFFSET.
2009-07-08 09:24:01 -07:00
Peter Chubb
00024be968 x86: Fix resume from suspend when CONFIG_CC_STACKPROTECTOR
Patch 08687aec71bc9134fe336e561f6did877bacf74fc0a (x86: unify
power/cpu_(32|64).c)  renamed cpu_32.c to cpu.c, but did not update
the special compilation flags for the file for the new name.

This patch fixes the compilation flags, and therefore fixes resume
from suspend on my Acer Aspire One.

[rjw: The regression from 2.6.30 fixed by this patch is tracked as
 http://bugzilla.kernel.org/show_bug.cgi?id=13661]

Signed-off-by: Peter Chubb <peterc@nicta.com.au>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-07-08 13:20:13 +02:00
Anton Vorontsov
ea96025a26 powerpc: Don't use alloc_bootmem() in init_IRQ() path
This patch fixes various badnesses like this for all interrupt
controllers:

------------[ cut here ]------------
Badness at c04db9dc [verbose debug info unavailable]
NIP: c04db9dc LR: c04db9ac CTR: 00000000
REGS: c053de30 TRAP: 0700   Not tainted  (2.6.31-rc1-00432-ge69b2b5-dirty)
MSR: 00021000 <ME,CE>  CR: 22020084  XER: 00000000
TASK = c0500480[0] 'swapper' THREAD: c053c000
GPR00: 00000001 c053dee0 c0500480 00000000 00000050 00000020 3fffffff 00000000
GPR08: 00000001 c0540000 e0080080 00000000 22000084 64183600 3ff8f800 00000000
GPR16: 841b0240 449a0303 00000000 00000000 00000000 00000000 00000000 c04f5bf4
GPR24: 00000000 00000000 00000000 00000050 00000020 00000000 3fffffff 00000050
NIP [c04db9dc] alloc_arch_preferred_bootmem+0x48/0x74
LR [c04db9ac] alloc_arch_preferred_bootmem+0x18/0x74
Call Trace:
[c053dee0] [c000a5a4] __of_address_to_resource+0x44/0xd0 (unreliable)
[c053def0] [c04dba58] ___alloc_bootmem_nopanic+0x50/0x108
[c053df20] [c04dbb28] ___alloc_bootmem+0x18/0x50
[c053df30] [c04d5de0] qe_ic_init+0x5c/0x1b0
[c053df70] [c04d77b0] mpc85xx_mds_pic_init+0xb8/0x10c
[c053dfb0] [c04cf374] init_IRQ+0x28/0x3c

p.s. commit 85355bb272 ("powerpc: Fix
mpic alloc warning") missed some alloc_bootmem() instances, this is
now fixed.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:25 +10:00
Grant Likely
ad9064d5e2 powerpc: Fix spin_event_timeout() to be robust over context switches
Current implementation of spin_event_timeout can be interrupted by an
IRQ or context switch after testing the condition, but before checking
the timeout.  This can cause the loop to report a timeout when the
condition actually became true in the middle.

This patch adds one final check of the condition upon exit of the loop
if the last test of the condition was still false.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:24 +10:00
Michael Ellerman
30c5af435b powerpc: Use pr_devel() in do_dcache_icache_coherency()
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   2036     368       8    2412     96c arch/powerpc/mm/pgtable.o

size after:
   text    data     bss     dec     hex filename
   1677     248       8    1933     78d arch/powerpc/mm/pgtable.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:24 +10:00
Michael Ellerman
33875f0330 powerpc/cell: Use pr_devel() in axon_msi.c
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   7083    1616       0    8699    21fb arch/powerpc/../axon_msi.o

size after:
   text    data     bss     dec     hex filename
   5772    1208       0    6980    1b44 arch/powerpc/../axon_msi.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:23 +10:00
Michael Ellerman
29e5fa59e5 powerpc: Use pr_devel() in arch/powerpc/mm/gup.c
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   3252     384       0    3636     e34 arch/powerpc/mm/gup.o

size after:
   text    data     bss     dec     hex filename
   2576      96       0    2672     a70 arch/powerpc/mm/gup.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:23 +10:00
Michael Ellerman
651e2dd2a1 powerpc: Cleanup & use pr_devel() in arch/powerpc/mm/slb.c
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   3261     416       4    3681     e61 arch/powerpc/mm/slb.o

size after:
   text    data     bss     dec     hex filename
   2861     248       4    3113     c29 arch/powerpc/mm/slb.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:22 +10:00
Huang Weiyi
3665ee36fa powerpc/perf_counter: Remove duplicated #include
Remove duplicated #include('s) in
  arch/powerpc/kernel/mpc7450-pmu.c
  arch/powerpc/kernel/ppc970-pmu.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:22 +10:00
Michael Ellerman
a1ac38ab98 powerpc: Use pr_devel() in arch/powerpc/mm/mmu_context_nohash.c
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text	   data	    bss	    dec	    hex	filename
   1508	     48	     28	   1584	    630	powerpc/mm/mmu_context_nohash.o

size after:
   text	   data	    bss	    dec	    hex	filename
   1088	      0	     28	   1116	    45c	powerpc/mm/mmu_context_nohash.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:22 +10:00
Michael Ellerman
b69e9e931d powerpc/pseries: Use pr_devel() in xics.c
pr_debug() can now result in code being generated even when DEBUG
is not defined. That's not really desirable in some places.

With CONFIG_DYNAMIC_DEBUG=y:

size before:
   text    data     bss     dec     hex filename
   7720    5488     296   13504    34c0 platforms/pseries/xics.o

size after:
   text    data     bss     dec     hex filename
   7535	   5456	    296	  13287	   33e7	platforms/pseries/xics.o

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:21 +10:00
Joe Perches
d258e64ef5 powerpc: Remove unnecessary semicolons
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-07-08 13:50:21 +10:00