Commit Graph

74838 Commits

Author SHA1 Message Date
Michael Krufky
b3aa2269bd V4L/DVB (6798): saa7134: enable LNA in analog mode for Hauppauge WinTV HVR-1110
Thanks to Hermann Pitton for noticing that this was missing.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-13 17:44:46 -02:00
Adrian Bunk
3f84307a10 V4L/DVB (6803): buf-core.c locking fixes
After commit 19fb145799 the callers in
videobuf-core.c that already hold the lock must call
__videobuf_read_start() instead of videobuf_read_start().

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-13 00:15:25 -02:00
Linus Torvalds
da8cadb31b Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix endless loop in cheetah_xcall_deliver().
  [SERIAL] sparc: Infrastructure to fix section mismatch bugs.
2007-12-12 09:52:12 -08:00
Linus Torvalds
02ec96be2b Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c/isp1301_omap: Build fix
  i2c: Add missing spaces in split log messages
  i2c-gpio: Initialize adapter class
  i2c: Delete an outdated piece of documentation
2007-12-12 08:43:51 -08:00
David S. Miller
0de56d1ab8 [SPARC64]: Fix endless loop in cheetah_xcall_deliver().
We need to mask out the proper bits when testing the dispatch status
register else we can see unrelated NACK bits from previous cross call
sends.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-12 07:36:36 -08:00
Martin Habets
58d784a5c7 [SERIAL] sparc: Infrastructure to fix section mismatch bugs.
This patch against 2.6.23 sparc-2.6.git contains a number of minor
cleanups of the sparc serial drivers.  Initially I fixed this build
warning:

WARNING: vmlinux.o(.text+0x107a2c): Section mismatch: reference to .init.text:add_preferred_console (between 'sunserial_console_match' and 'sunserial_console_termios')

which is done by declaring sunserial_console_match() as __init.  This
resulted in build warnings on sunserial_current_minor.  To resolve
these the variable was changed so it is no longer global, and to hide
operations on it inside 2 new functions. These functions handle the
UART minor handling code that is common to all sparc serial drivers.

These changes allowed to clean up the uart counters in all the sparc
serial drivers, and the administration of minor device numbers.

Lastly, sunserial_console_termios() does not need to be exported since
it is only called from non-modular code.

Sadly, the following build warning still exists:

WARNING: vmlinux.o(__ksymtab+0x2910): Section mismatch: reference to .init.text:sunserial_console_match (between '__ksymtab_sunserial_console_match' and '__ksymtab_sunserial_unregister_minors')

This could be resolved by not exporting sunserial_console_match(), but
this is not possible at the moment because it is being called from
modular code. On the other hand, this is a bogus warning since it
comes from a ksymtab section.

Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-12 07:36:34 -08:00
David Brownell
187426e69a i2c/isp1301_omap: Build fix
Build fix to the isp1301_omap driver ... this driver gets built
more often in the OMAP tree than in mainline, partly because the
defconfig for H2 (plus probably H3 and H4) needs updating.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-12-12 13:45:25 +01:00
Joe Perches
fce3ff0331 i2c: Add missing spaces in split log messages
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-12-12 13:45:24 +01:00
Atsushi Nemoto
50862d9490 i2c-gpio: Initialize adapter class
This is required to let hwmon drivers attach to the adapter.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-12-12 13:45:24 +01:00
Jean Delvare
45ccc6c50d i2c: Delete an outdated piece of documentation
I'm amazed that this old piece of documentation managed to survive
until today.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-12-12 13:45:24 +01:00
Mauro Carvalho Chehab
19fb145799 V4L/DVB (6609): Re-adds lock safe videobuf_read_start
videobuf_dvb needs videobuf_read_start. The EXPORT_SYMBOL_GPL() were removed by
a previous patch. However, videobuf_dvb needs this.

This patch re-adds videobuf_read_start, doing the proper lock.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-12 08:21:37 -02:00
Linus Torvalds
4af7565303 Revert "make bnx2x select ZLIB_INFLATE"
This reverts commit 70eba18b56, as per
Jeff Garzik:

   "That was meant for 2.6.25, and actually (due to patching) applied to
    a completely unrelated 2.6.24 net driver."

Noted-by: Roland Dreier <rdreier@cisco.com>
Requested-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-11 19:28:36 -08:00
Adrian Bunk
7d44e89218 V4L/DVB (6797): bt8xx/ section fixes
This patch fixes the following section mismatch with CONFIG_HOTPLUG=n:

<--  snip  -->

...
...

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 22:22:58 -02:00
Adrian Bunk
056827a49c V4L/DVB (6796): ivtv/ section fix
This patch fixes the following section mismatch with CONFIG_HOTPLUG=n:

<--  snip  -->

...
...

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 22:22:52 -02:00
Mauro Carvalho Chehab
4a56087f3b V4L/DVB (6794): Fix compilation when dib3000mc is compiled as a module
As reported by Andrew Morton:

> ERROR: "dibusb_dib3000mc_frontend_attach" [drivers/media/dvb/dvb-usb/dvb-usb-nova-t-usb2.ko] undefined!
> ERROR: "dibusb_dib3000mc_tuner_attach" [drivers/media/dvb/dvb-usb/dvb-usb-nova-t-usb2.ko] undefined!
> ERROR: "dibusb_dib3000mc_frontend_attach" [drivers/media/dvb/dvb-usb/dvb-usb-dibusb-mc.ko] undefined!
> ERROR: "dibusb_dib3000mc_tuner_attach" [drivers/media/dvb/dvb-usb/dvb-usb-dibusb-mc.ko] undefined!
> ERROR: "dibusb_dib3000mc_frontend_attach" [drivers/media/dvb/dvb-usb/dvb-usb-a800.ko] undefined!
> ERROR: "dibusb_dib3000mc_tuner_attach" [drivers/media/dvb/dvb-usb/dvb-usb-a800.ko] undefined

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:13:28 -02:00
Jiri Kosina
f6b5cf771a V4L/DVB (6733): DVB: Compile 3000MC-specific DIB code only for CONFIG_DVB_DIB3000MC
On Tue, 4 Dec 2007, Ingo Molnar wrote:

>  drivers/built-in.o: In function `dibusb_dib3000mc_tuner_attach':
>  : undefined reference to `dib3000mc_get_tuner_i2c_master'
>  drivers/built-in.o: In function `dibusb_dib3000mc_tuner_attach':
>  : undefined reference to `dib3000mc_set_config'

Seems like -common part contains also code that is not completely
common to all the modules.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:13:17 -02:00
Mauro Carvalho Chehab
8733e29748 V4L/DVB (6750): Fix in-kernel compilation for cxusb
cxusb needs tuner-xc2028*.h files, but Makefile is not adding its patch

drivers/media/dvb/dvb-usb/cxusb.c:33:26: error: tuner-xc2028.h: File not found
drivers/media/dvb/dvb-usb/cxusb.c:34:32: error: tuner-xc2028-types.h: File not found

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:24 -02:00
Benoit Istin
bc5483705c V4L/DVB (6746): saa7134-dvb: fix tuning for WinTV HVR-1110
There are several months my hvr1110 stop working.
This is very simple to fix, for my card revision at least, by setting a
missing field to the hauppauge_hvr_1110_config.

Signed-off-by: Benoit Istin <beistin@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:23 -02:00
Brandon Philips
0b29669c06 V4L/DVB (6751): V4L: Memory leak! Fix count in videobuf-vmalloc mmap
This is pretty serious bug.  map->count is never initialized after the
call to kmalloc making the count start at some random trash value.  The
end result is leaking videobufs.

Also, fix up the debug statements to print unsigned values.

Pushed to http://ifup.org/hg/v4l-dvb too

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:22 -02:00
Heikki Lindholm
843b1378c2 V4L/DVB (6690): saa7134: fix ignored interrupts
The saa7134 video driver starts dropping frames when used together with the
saa7134-alsa driver. Frames are dropped because when an audio event is waiting
the driver simply ignores the interrupt and passes it on to the saa7134-alsa
interrupt handler. The alsa interrupt handler in turn acknowledges all types
of events thus clearing the pending video events as well. Fix by only masking
out the audio event in the video interrupt handler and by only acknowledging
the audio event in the alsa driver.

Signed-off-by: Heikki Lindholm  <holindho@cs.helsinki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:18 -02:00
Hermann Pitton
4aa504a89a V4L/DVB (6686): saa7134: fix composite over s-video input on the Tevion MD 9717
The vmux for composite over s-video input was wrong.

Signed-off-by: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:17 -02:00
Richard Knutsson
b730a81c51 V4L/DVB (6684): Complement va_start() with va_end() + style fixes
Complement va_start() with va_end() + minor style fixes in the same function.

Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:16 -02:00
Heikki Lindholm
174eb8e8cb V4L/DVB (6666): saa7134-alsa: fix period handling
The period handling in saa7134-alsa is broken in two ways. First, the
minimum number of periods of two does not work, because the dma is setup
two periods ahead in the irq handler. Fix the minimum to four periods.
Second, the code assumes that the number of periods is divisible by two,
which isn't always the case on ALSA. Fix by adding a constraint.

Signed-off-by: Heikki Lindholm  <holindho@cs.helsinki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:14 -02:00
Chris Pascoe
78f3b0b672 V4L/DVB (6629): zl10353: fix default adc_clock and TRL nominal rate calculation
The default adc_clock for the zl10353 is different from what was originally
thought to be the case and the TRL nominal rate formula was incorrect as a
result.  Use a better (and hopefully now correct) formula.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:13 -02:00
Brandon Philips
820eacd84c V4L/DVB (6615): V4L: Fix VIDIOCGMBUF locking in saa7146
Fallout from videobuf_mmap_setup() locking fixes.

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:12 -02:00
Brandon Philips
053fcb6014 V4L/DVB (6602): V4L: Convert videobuf drivers to videobuf_stop
Drivers were using cookie cutter code for stopping the read/stream.  Use the
new videobuf_stop function which is lock safe.

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:09 -02:00
Brandon Philips
19bc5133da V4L/DVB (6601): V4L: videobuf-core locking fixes and comments
- Add comments to functions that require that caller hold q->lock
- Add __videobuf_mmap_free that doesn't hold q->lock for use within videobuf
- Add locking to videobuf_mmap_free
- Fix linux/drivers/media/common/saa7146_video.c which was holding lock around
  videobuf_read_stop
- Add locking to functions that operate on a queue
- Add videobuf_stop to take care of stopping in both the read and stream case

TODO: bttv still has an unsafe call to videobuf_queue_is_busy

Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:08 -02:00
Mauro Carvalho Chehab
63337dd3f5 V4L/DVB (6581): Fix: avoids negative vma usage count
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:07 -02:00
Hartmut Hackmann
33f7771411 V4L/DVB (6579): Fix bug #8824: Correct support for Diseqc on tda10086
This is a modified version of a patch previously posted by Thomas
Unverzagt.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:06 -02:00
Mauro Carvalho Chehab
f4b8b3ae13 V4L/DVB (6542): Fix S-video mode on tvp5150
Thanks to Markus Reichberger to point this.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:03 -02:00
Sascha Sommer
2b2c93ac99 V4L/DVB (6540): em28xx: fix failing autodetection after the reboot
The attached patch is required so that the autodetecion code also works after
a reboot.

Setting the I2C speed does not seem to be supported for em2800.

Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:02 -02:00
Hans Verkuil
8a75601035 V4L/DVB (6485): ivtv: fix compile warning
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-12-11 18:08:01 -02:00
Herbert Xu
75b8c13326 [IPSEC]: Fix potential dst leak in xfrm_lookup
If we get an error during the actual policy lookup we don't free the
original dst while the caller expects us to always free the original
dst in case of error.

This patch fixes that.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 04:38:08 -08:00
Pavel Emelyanov
3f03e38789 [VLAN]: Fix potential race in vlan_cleanup_module vs vlan_ioctl_handler.
The vlan module cleanup function starts with

	vlan_netlink_fini();
	vlan_ioctl_set(NULL);

The first call removes all the vlan devices and
the second one closes the vlan ioctl.

AFAIS there's a tiny race window between these two
calls - after rtnl unregistered all the vlans, but
the ioctl handler isn't set to NULL yet, user can
manage to call this ioctl and create one vlan device,
and that this function will later BUG_ON seeing
non-emply hashes.

I think, that we must first close the vlan ioctl
and only after this remove all the vlans with the
vlan_netlink_fini() call.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:32 -08:00
Wang Chen
d59b54b150 [NET]: Fix wrong comments for unregister_net*
There are some return value comments for void functions.
Fixed it.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:32 -08:00
Michael Chan
bbe4297421 [BNX2]: Update version to 1.6.9.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:31 -08:00
Michael Chan
c09c262783 [BNX2]: Fix RX packet rot.
Packets can be left in the RX ring if the NAPI budget is reached.
This is caused by storing the latest rx index at the beginning of
bnx2_rx_int().  We may not process all the work up to this index
if the budget is reached and so some packets in the RX ring may rot
when we later check for more work using this stored rx index.

The fix is to not store this latest hw index and only store the
processed rx index.  We use a new function bnx2_get_hw_rx_cons()
to fetch the latest hw rx index.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:30 -08:00
Michael Chan
fb0c18bd1f [BNX2]: Add PHY_DIS_EARLY_DAC workaround.
5709 Ax and Bx chips all need this workaround.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:29 -08:00
Julia Lawall
9b3efc0133 [S390]: Fix use of skb after netif_rx
Recently, Wang Chen submitted a patch
(d30f53aeb3) to move a call to netif_rx(skb)
after a subsequent reference to skb, because netif_rx may call kfree_skb on
its argument.  netif_rx_ni calls netif_rx, so the same problem occurs in
the files below.

I have left the updating of dev->last_rx after the calls to netif_rx_ni
because it seems time dependent, but moved the other field updates before.

This was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression skb, e,e1;
@@

(
 netif_rx(skb);
|
 netif_rx_ni(skb);
)
  ... when != skb = e
(
  skb = e1
|
* skb
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:29 -08:00
Julia Lawall
299f590f26 [XTENSA]: Fix use of skb after netif_rx
Recently, Wang Chen submitted a patch
(d30f53aeb3) to move a call to netif_rx(skb)
after a subsequent reference to skb, because netif_rx may call kfree_skb on
its argument.  The same problem occurs in some other drivers as well.

This was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression skb, e,e1;
@@

(
 netif_rx(skb);
|
 netif_rx_ni(skb);
)
  ... when != skb = e
(
  skb = e1
|
* skb
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:28 -08:00
Julia Lawall
505a41d43c [UM]: Fix use of skb after netif_rx
Recently, Wang Chen submitted a patch
(d30f53aeb3) to move a call to netif_rx(skb)
after a subsequent reference to skb, because netif_rx may call kfree_skb on
its argument.  The same problem occurs in some other drivers as well.

This was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression skb, e,e1;
@@

(
 netif_rx(skb);
|
 netif_rx_ni(skb);
)
  ... when != skb = e
(
  skb = e1
|
* skb
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:27 -08:00
Thomas Graf
95a02cfd4d [IPv6] ESP: Discard dummy packets introduced in rfc4303
RFC4303 introduces dummy packets with a nexthdr value of 59
to implement traffic confidentiality. Such packets need to
be dropped silently and the payload may not be attempted to
be parsed as it consists of random chunk.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:27 -08:00
Thomas Graf
2017a72c07 [IPv4] ESP: Discard dummy packets introduced in rfc4303
RFC4303 introduces dummy packets with a nexthdr value of 59
to implement traffic confidentiality. Such packets need to
be dropped silently and the payload may not be attempted to
be parsed as it consists of random chunk.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:26 -08:00
Pavel Emelyanov
a4e65d36a9 [IPV4]: Swap the ifa allocation with the"ipv4_devconf_setall" call
According to Herbert, the ipv4_devconf_setall should be called
only when the ifa is added to the device. However, failed
ifa allocation may bring things into inconsistent state.

Move the call to ipv4_devconf_setall after the ifa allocation.

Fits both net-2.6 (with offsets) and net-2.6.25 (cleanly).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:25 -08:00
YOSHIFUJI Hideaki
1df2e44560 [IPV6] XFRM: Fix auditing rt6i_flags; use RTF_xxx flags instead of RTCF_xxx.
RTCF_xxx flags, defined in include/linux/in_route.h) are available for
IPv4 route (rtable) entries only.  Use RTF_xxx flags instead, defined
in include/linux/ipv6_route.h, for IPv6 route entries (rt6_info).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-11 02:45:24 -08:00
Linus Torvalds
82d29bf6dc Linux 2.6.24-rc5 2007-12-10 19:48:43 -08:00
Jeremy Fitzhardinge
7999f4b4e5 xen: relax signature check
Some versions of Xen 3.x set their magic number to "xen-3.[12]", so
relax the test to match them.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-10 19:46:58 -08:00
Linus Torvalds
c34c15b02e Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Malta: Enable tickless and highres timers.
  [MIPS] Bigsur: Enable tickless and and highres timers.
  qemu: do not enable IP7 blindly
  [MIPS] Alchemy: Fix Au1x SD controller IRQ
  [MIPS] Don't byteswap writes to display when running bigendian
2007-12-10 19:45:17 -08:00
Eric W. Biederman
3790ee4bd8 proc: remove/Fix proc generic d_revalidate
Ultimately to implement /proc perfectly we need an implementation of
d_revalidate because files and directories can be removed behind the back
of the VFS, and d_revalidate is the only way we can let the VFS know that
this has happened.

Unfortunately the linux VFS can not cope with anything in the path to a
mount point going away.  So a proper d_revalidate method that calls d_drop
also needs to call have_submounts which is moderately expensive, so you
really don't want a d_revalidate method that unconditionally calls it, but
instead only calls it when the backing object has really gone away.

proc generic entries only disappear on module_unload (when not counting the
fledgling network namespace) so it is quite rare that we actually encounter
that case and has not actually caused us real world trouble yet.

So until we get a proper test for keeping dentries in the dcache fix the
current d_revalidate method by completely removing it.  This returns us to
the current status quo.

So with CONFIG_NETNS=n things should look as they have always looked.

For CONFIG_NETNS=y things work most of the time but there are a few rare
corner cases that don't behave properly.  As the network namespace is
barely present in 2.6.24 this should not be a problem.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "Denis V. Lunev" <den@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-10 19:43:55 -08:00
Rini van Zetten
d84248bf46 atmel_spi: reload RCR before TCR
We have a wifi module connected to the spi bus and got sometimes FIFO
overrun errors on the spi bus.

After some investigation i found that the driver loads the TCR (transmit
count) register before the RCR (receive count).  When the transfer list is
not empty the atmel_spi_next_message is called while tx and rx are enabled.
 As soon as the TCR is loaded, hardware starts transfer and causes a rx
fifo overrun because the RCR is not loaded yet.

Load the RCR before the TCR.  After this patch the fifo overrun disapears
at out setup.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Rini van Zetten <rini@arvoo.nl>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-10 19:43:55 -08:00