USB: gadget: file storage gadget cleanups
Clean up the file storage gadget, using newer APIs and conventions: - gadget_is_dualspeed() and gadget_is_otg() ... #ifdef removal - Remove many now-needless #includes - Use the DEBUG (from Kconfig+Makefile) and VERBOSE_DEBUG conventions. - Remove some "sparse" warnings (it still dislikes the __user annotations) This gave only a minor object code shrinkage. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -217,17 +217,11 @@
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*/
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#undef DEBUG
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#undef VERBOSE
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/* #define VERBOSE_DEBUG */
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#undef DUMP_MSGS
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#include <linux/bitops.h>
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#include <linux/blkdev.h>
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#include <linux/compiler.h>
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#include <linux/completion.h>
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#include <linux/dcache.h>
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#include <linux/delay.h>
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@ -235,18 +229,10 @@
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#include <linux/fcntl.h>
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kref.h>
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#include <linux/kthread.h>
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#include <linux/limits.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/pagemap.h>
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#include <linux/rwsem.h>
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#include <linux/sched.h>
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#include <linux/signal.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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@ -289,57 +275,51 @@ MODULE_LICENSE("Dual BSD/GPL");
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/*-------------------------------------------------------------------------*/
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#define xprintk(f,level,fmt,args...) \
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dev_printk(level , &(f)->gadget->dev , fmt , ## args)
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#define yprintk(l,level,fmt,args...) \
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dev_printk(level , &(l)->dev , fmt , ## args)
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#ifdef DEBUG
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#define DBG(fsg,fmt,args...) \
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xprintk(fsg , KERN_DEBUG , fmt , ## args)
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#define LDBG(lun,fmt,args...) \
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yprintk(lun , KERN_DEBUG , fmt , ## args)
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#define MDBG(fmt,args...) \
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printk(KERN_DEBUG DRIVER_NAME ": " fmt , ## args)
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#else
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#define DBG(fsg,fmt,args...) \
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do { } while (0)
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#define LDBG(lun,fmt,args...) \
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do { } while (0)
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#define MDBG(fmt,args...) \
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do { } while (0)
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#undef VERBOSE
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#undef VERBOSE_DEBUG
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#undef DUMP_MSGS
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#endif /* DEBUG */
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#ifdef VERBOSE
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#define VDBG DBG
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#ifdef VERBOSE_DEBUG
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#define VLDBG LDBG
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#else
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#define VDBG(fsg,fmt,args...) \
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do { } while (0)
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#define VLDBG(lun,fmt,args...) \
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do { } while (0)
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#endif /* VERBOSE */
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#endif /* VERBOSE_DEBUG */
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#define ERROR(fsg,fmt,args...) \
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xprintk(fsg , KERN_ERR , fmt , ## args)
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#define LERROR(lun,fmt,args...) \
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yprintk(lun , KERN_ERR , fmt , ## args)
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#define WARN(fsg,fmt,args...) \
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xprintk(fsg , KERN_WARNING , fmt , ## args)
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#define LWARN(lun,fmt,args...) \
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yprintk(lun , KERN_WARNING , fmt , ## args)
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#define INFO(fsg,fmt,args...) \
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xprintk(fsg , KERN_INFO , fmt , ## args)
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#define LINFO(lun,fmt,args...) \
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yprintk(lun , KERN_INFO , fmt , ## args)
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#define MINFO(fmt,args...) \
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printk(KERN_INFO DRIVER_NAME ": " fmt , ## args)
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#define DBG(d, fmt, args...) \
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dev_dbg(&(d)->gadget->dev , fmt , ## args)
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#define VDBG(d, fmt, args...) \
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dev_vdbg(&(d)->gadget->dev , fmt , ## args)
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#define ERROR(d, fmt, args...) \
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dev_err(&(d)->gadget->dev , fmt , ## args)
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#define WARN(d, fmt, args...) \
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dev_warn(&(d)->gadget->dev , fmt , ## args)
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#define INFO(d, fmt, args...) \
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dev_info(&(d)->gadget->dev , fmt , ## args)
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/*-------------------------------------------------------------------------*/
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@ -350,8 +330,8 @@ MODULE_LICENSE("Dual BSD/GPL");
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static struct {
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char *file[MAX_LUNS];
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int ro[MAX_LUNS];
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int num_filenames;
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int num_ros;
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unsigned int num_filenames;
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unsigned int num_ros;
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unsigned int nluns;
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int removable;
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@ -950,8 +930,6 @@ static const struct usb_descriptor_header *fs_function[] = {
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#define FS_FUNCTION_PRE_EP_ENTRIES 2
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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/*
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* USB 2.0 devices need to expose both high speed and full speed
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* descriptors, unless they only run at full speed.
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@ -1014,14 +992,14 @@ static const struct usb_descriptor_header *hs_function[] = {
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#define HS_FUNCTION_PRE_EP_ENTRIES 2
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/* Maxpacket and other transfer characteristics vary by speed. */
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#define ep_desc(g,fs,hs) (((g)->speed==USB_SPEED_HIGH) ? (hs) : (fs))
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#else
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/* If there's no high speed support, always use the full-speed descriptor. */
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#define ep_desc(g,fs,hs) fs
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#endif /* !CONFIG_USB_GADGET_DUALSPEED */
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static inline struct usb_endpoint_descriptor *
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ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
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struct usb_endpoint_descriptor *hs)
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{
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if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
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return hs;
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return fs;
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}
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/* The CBI specification limits the serial string to 12 uppercase hexadecimal
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@ -1053,26 +1031,22 @@ static struct usb_gadget_strings stringtab = {
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static int populate_config_buf(struct usb_gadget *gadget,
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u8 *buf, u8 type, unsigned index)
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{
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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enum usb_device_speed speed = gadget->speed;
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#endif
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int len;
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const struct usb_descriptor_header **function;
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if (index > 0)
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return -EINVAL;
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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if (type == USB_DT_OTHER_SPEED_CONFIG)
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if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG)
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speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed;
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if (speed == USB_SPEED_HIGH)
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if (gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH)
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function = hs_function;
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else
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#endif
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function = fs_function;
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/* for now, don't advertise srp-only devices */
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if (!gadget->is_otg)
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if (!gadget_is_otg(gadget))
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function++;
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len = usb_gadget_config_buf(&config_desc, buf, EP0_BUFSIZE, function);
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@ -1394,10 +1368,9 @@ static int standard_setup_req(struct fsg_dev *fsg,
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value = sizeof device_desc;
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memcpy(req->buf, &device_desc, value);
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break;
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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case USB_DT_DEVICE_QUALIFIER:
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VDBG(fsg, "get device qualifier\n");
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if (!fsg->gadget->is_dualspeed)
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if (!gadget_is_dualspeed(fsg->gadget))
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break;
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value = sizeof dev_qualifier;
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memcpy(req->buf, &dev_qualifier, value);
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@ -1405,15 +1378,12 @@ static int standard_setup_req(struct fsg_dev *fsg,
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case USB_DT_OTHER_SPEED_CONFIG:
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VDBG(fsg, "get other-speed config descriptor\n");
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if (!fsg->gadget->is_dualspeed)
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if (!gadget_is_dualspeed(fsg->gadget))
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break;
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goto get_config;
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#endif
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case USB_DT_CONFIG:
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VDBG(fsg, "get configuration descriptor\n");
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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get_config:
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#endif
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get_config:
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value = populate_config_buf(fsg->gadget,
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req->buf,
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w_value >> 8,
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@ -3859,7 +3829,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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/* Find out how many LUNs there should be */
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i = mod_data.nluns;
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if (i == 0)
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i = max(mod_data.num_filenames, 1);
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i = max(mod_data.num_filenames, 1u);
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if (i > MAX_LUNS) {
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ERROR(fsg, "invalid number of LUNs: %d\n", i);
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rc = -EINVAL;
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@ -3944,22 +3914,24 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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intf_desc.bInterfaceProtocol = mod_data.transport_type;
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fs_function[i + FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
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#ifdef CONFIG_USB_GADGET_DUALSPEED
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hs_function[i + HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
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if (gadget_is_dualspeed(gadget)) {
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hs_function[i + HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
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/* Assume ep0 uses the same maxpacket value for both speeds */
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dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
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/* Assume ep0 uses the same maxpacket value for both speeds */
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dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
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/* Assume that all endpoint addresses are the same for both speeds */
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hs_bulk_in_desc.bEndpointAddress = fs_bulk_in_desc.bEndpointAddress;
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hs_bulk_out_desc.bEndpointAddress = fs_bulk_out_desc.bEndpointAddress;
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hs_intr_in_desc.bEndpointAddress = fs_intr_in_desc.bEndpointAddress;
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#endif
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if (gadget->is_otg) {
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otg_desc.bmAttributes |= USB_OTG_HNP;
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/* Assume endpoint addresses are the same for both speeds */
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hs_bulk_in_desc.bEndpointAddress =
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fs_bulk_in_desc.bEndpointAddress;
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hs_bulk_out_desc.bEndpointAddress =
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fs_bulk_out_desc.bEndpointAddress;
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hs_intr_in_desc.bEndpointAddress =
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fs_intr_in_desc.bEndpointAddress;
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}
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if (gadget_is_otg(gadget))
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otg_desc.bmAttributes |= USB_OTG_HNP;
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rc = -ENOMEM;
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/* Allocate the request and buffer for endpoint 0 */
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