USB: cleanups for g_file_storage
This patch (as957) makes some minor cleanups to the g_file_storage driver: Update the copyright date and version string; Uniformize the logging macros for the gadget and the LUNs; Remove "inline" markers -- nowadays we rely on the compiler to decide which routines are best inlined; Use the print_hex_dump() library routines; Remove some unnecessary assignments within conditionals and fix some close-brace indenting levels; Fix some column-80 violations. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
Greg Kroah-Hartman
parent
d74d4a69dc
commit
79a7d9ee1a
|
|
@ -1,7 +1,7 @@
|
|||
/*
|
||||
* file_storage.c -- File-backed USB Storage Gadget, for USB development
|
||||
*
|
||||
* Copyright (C) 2003-2005 Alan Stern
|
||||
* Copyright (C) 2003-2007 Alan Stern
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
|
|
@ -218,7 +218,7 @@
|
|||
|
||||
|
||||
/* #define VERBOSE_DEBUG */
|
||||
#undef DUMP_MSGS
|
||||
/* #define DUMP_MSGS */
|
||||
|
||||
|
||||
#include <linux/blkdev.h>
|
||||
|
|
@ -249,7 +249,7 @@
|
|||
|
||||
#define DRIVER_DESC "File-backed Storage Gadget"
|
||||
#define DRIVER_NAME "g_file_storage"
|
||||
#define DRIVER_VERSION "28 November 2005"
|
||||
#define DRIVER_VERSION "7 August 2007"
|
||||
|
||||
static const char longname[] = DRIVER_DESC;
|
||||
static const char shortname[] = DRIVER_NAME;
|
||||
|
|
@ -275,12 +275,9 @@ MODULE_LICENSE("Dual BSD/GPL");
|
|||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
#define yprintk(l,level,fmt,args...) \
|
||||
dev_printk(level , &(l)->dev , fmt , ## args)
|
||||
|
||||
#ifdef DEBUG
|
||||
#define LDBG(lun,fmt,args...) \
|
||||
yprintk(lun , KERN_DEBUG , fmt , ## args)
|
||||
dev_dbg(&(lun)->dev , fmt , ## args)
|
||||
#define MDBG(fmt,args...) \
|
||||
printk(KERN_DEBUG DRIVER_NAME ": " fmt , ## args)
|
||||
#else
|
||||
|
|
@ -300,11 +297,11 @@ MODULE_LICENSE("Dual BSD/GPL");
|
|||
#endif /* VERBOSE_DEBUG */
|
||||
|
||||
#define LERROR(lun,fmt,args...) \
|
||||
yprintk(lun , KERN_ERR , fmt , ## args)
|
||||
dev_err(&(lun)->dev , fmt , ## args)
|
||||
#define LWARN(lun,fmt,args...) \
|
||||
yprintk(lun , KERN_WARNING , fmt , ## args)
|
||||
dev_warn(&(lun)->dev , fmt , ## args)
|
||||
#define LINFO(lun,fmt,args...) \
|
||||
yprintk(lun , KERN_INFO , fmt , ## args)
|
||||
dev_info(&(lun)->dev , fmt , ## args)
|
||||
|
||||
#define MINFO(fmt,args...) \
|
||||
printk(KERN_INFO DRIVER_NAME ": " fmt , ## args)
|
||||
|
|
@ -558,7 +555,7 @@ struct lun {
|
|||
|
||||
#define backing_file_is_open(curlun) ((curlun)->filp != NULL)
|
||||
|
||||
static inline struct lun *dev_to_lun(struct device *dev)
|
||||
static struct lun *dev_to_lun(struct device *dev)
|
||||
{
|
||||
return container_of(dev, struct lun, dev);
|
||||
}
|
||||
|
|
@ -691,13 +688,13 @@ struct fsg_dev {
|
|||
|
||||
typedef void (*fsg_routine_t)(struct fsg_dev *);
|
||||
|
||||
static int inline exception_in_progress(struct fsg_dev *fsg)
|
||||
static int exception_in_progress(struct fsg_dev *fsg)
|
||||
{
|
||||
return (fsg->state > FSG_STATE_IDLE);
|
||||
}
|
||||
|
||||
/* Make bulk-out requests be divisible by the maxpacket size */
|
||||
static void inline set_bulk_out_req_length(struct fsg_dev *fsg,
|
||||
static void set_bulk_out_req_length(struct fsg_dev *fsg,
|
||||
struct fsg_buffhd *bh, unsigned int length)
|
||||
{
|
||||
unsigned int rem;
|
||||
|
|
@ -723,50 +720,36 @@ static void close_all_backing_files(struct fsg_dev *fsg);
|
|||
static void dump_msg(struct fsg_dev *fsg, const char *label,
|
||||
const u8 *buf, unsigned int length)
|
||||
{
|
||||
unsigned int start, num, i;
|
||||
char line[52], *p;
|
||||
|
||||
if (length >= 512)
|
||||
return;
|
||||
if (length < 512) {
|
||||
DBG(fsg, "%s, length %u:\n", label, length);
|
||||
|
||||
start = 0;
|
||||
while (length > 0) {
|
||||
num = min(length, 16u);
|
||||
p = line;
|
||||
for (i = 0; i < num; ++i) {
|
||||
if (i == 8)
|
||||
*p++ = ' ';
|
||||
sprintf(p, " %02x", buf[i]);
|
||||
p += 3;
|
||||
}
|
||||
*p = 0;
|
||||
printk(KERN_DEBUG "%6x: %s\n", start, line);
|
||||
buf += num;
|
||||
start += num;
|
||||
length -= num;
|
||||
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET,
|
||||
16, 1, buf, length, 0);
|
||||
}
|
||||
}
|
||||
|
||||
static void inline dump_cdb(struct fsg_dev *fsg)
|
||||
static void dump_cdb(struct fsg_dev *fsg)
|
||||
{}
|
||||
|
||||
#else
|
||||
|
||||
static void inline dump_msg(struct fsg_dev *fsg, const char *label,
|
||||
static void dump_msg(struct fsg_dev *fsg, const char *label,
|
||||
const u8 *buf, unsigned int length)
|
||||
{}
|
||||
|
||||
static void inline dump_cdb(struct fsg_dev *fsg)
|
||||
{
|
||||
int i;
|
||||
char cmdbuf[3*MAX_COMMAND_SIZE + 1];
|
||||
#ifdef VERBOSE_DEBUG
|
||||
|
||||
for (i = 0; i < fsg->cmnd_size; ++i)
|
||||
sprintf(cmdbuf + i*3, " %02x", fsg->cmnd[i]);
|
||||
VDBG(fsg, "SCSI CDB: %s\n", cmdbuf);
|
||||
static void dump_cdb(struct fsg_dev *fsg)
|
||||
{
|
||||
print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE,
|
||||
16, 1, fsg->cmnd, fsg->cmnd_size, 0);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static void dump_cdb(struct fsg_dev *fsg)
|
||||
{}
|
||||
|
||||
#endif /* VERBOSE_DEBUG */
|
||||
#endif /* DUMP_MSGS */
|
||||
|
||||
|
||||
|
|
@ -789,24 +772,24 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
|
|||
|
||||
/* Routines for unaligned data access */
|
||||
|
||||
static u16 inline get_be16(u8 *buf)
|
||||
static u16 get_be16(u8 *buf)
|
||||
{
|
||||
return ((u16) buf[0] << 8) | ((u16) buf[1]);
|
||||
}
|
||||
|
||||
static u32 inline get_be32(u8 *buf)
|
||||
static u32 get_be32(u8 *buf)
|
||||
{
|
||||
return ((u32) buf[0] << 24) | ((u32) buf[1] << 16) |
|
||||
((u32) buf[2] << 8) | ((u32) buf[3]);
|
||||
}
|
||||
|
||||
static void inline put_be16(u8 *buf, u16 val)
|
||||
static void put_be16(u8 *buf, u16 val)
|
||||
{
|
||||
buf[0] = val >> 8;
|
||||
buf[1] = val;
|
||||
}
|
||||
|
||||
static void inline put_be32(u8 *buf, u32 val)
|
||||
static void put_be32(u8 *buf, u32 val)
|
||||
{
|
||||
buf[0] = val >> 24;
|
||||
buf[1] = val >> 16;
|
||||
|
|
@ -992,7 +975,7 @@ static const struct usb_descriptor_header *hs_function[] = {
|
|||
#define HS_FUNCTION_PRE_EP_ENTRIES 2
|
||||
|
||||
/* Maxpacket and other transfer characteristics vary by speed. */
|
||||
static inline struct usb_endpoint_descriptor *
|
||||
static struct usb_endpoint_descriptor *
|
||||
ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
|
||||
struct usb_endpoint_descriptor *hs)
|
||||
{
|
||||
|
|
@ -1616,7 +1599,8 @@ static int do_read(struct fsg_dev *fsg)
|
|||
/* Wait for the next buffer to become available */
|
||||
bh = fsg->next_buffhd_to_fill;
|
||||
while (bh->state != BUF_STATE_EMPTY) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -1855,7 +1839,8 @@ static int do_write(struct fsg_dev *fsg)
|
|||
}
|
||||
|
||||
/* Wait for something to happen */
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -2339,7 +2324,8 @@ static int pad_with_zeros(struct fsg_dev *fsg)
|
|||
|
||||
/* Wait for the next buffer to be free */
|
||||
while (bh->state != BUF_STATE_EMPTY) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -2399,7 +2385,8 @@ static int throw_away_data(struct fsg_dev *fsg)
|
|||
}
|
||||
|
||||
/* Otherwise wait for something to happen */
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
return 0;
|
||||
|
|
@ -2521,7 +2508,8 @@ static int send_status(struct fsg_dev *fsg)
|
|||
/* Wait for the next buffer to become available */
|
||||
bh = fsg->next_buffhd_to_fill;
|
||||
while (bh->state != BUF_STATE_EMPTY) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -2741,7 +2729,8 @@ static int do_scsi_command(struct fsg_dev *fsg)
|
|||
/* Wait for the next buffer to become available for data or status */
|
||||
bh = fsg->next_buffhd_to_drain = fsg->next_buffhd_to_fill;
|
||||
while (bh->state != BUF_STATE_EMPTY) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
fsg->phase_error = 0;
|
||||
|
|
@ -3015,7 +3004,8 @@ static int get_next_command(struct fsg_dev *fsg)
|
|||
/* Wait for the next buffer to become available */
|
||||
bh = fsg->next_buffhd_to_fill;
|
||||
while (bh->state != BUF_STATE_EMPTY) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -3031,7 +3021,8 @@ static int get_next_command(struct fsg_dev *fsg)
|
|||
|
||||
/* Wait for the CBW to arrive */
|
||||
while (bh->state != BUF_STATE_FULL) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
smp_rmb();
|
||||
|
|
@ -3042,7 +3033,8 @@ static int get_next_command(struct fsg_dev *fsg)
|
|||
|
||||
/* Wait for the next command to arrive */
|
||||
while (fsg->cbbuf_cmnd_size == 0) {
|
||||
if ((rc = sleep_thread(fsg)) != 0)
|
||||
rc = sleep_thread(fsg);
|
||||
if (rc)
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -3565,7 +3557,8 @@ static ssize_t show_ro(struct device *dev, struct device_attribute *attr, char *
|
|||
return sprintf(buf, "%d\n", curlun->ro);
|
||||
}
|
||||
|
||||
static ssize_t show_file(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
static ssize_t show_file(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct lun *curlun = dev_to_lun(dev);
|
||||
struct fsg_dev *fsg = dev_get_drvdata(dev);
|
||||
|
|
@ -3574,8 +3567,8 @@ static ssize_t show_file(struct device *dev, struct device_attribute *attr, char
|
|||
|
||||
down_read(&fsg->filesem);
|
||||
if (backing_file_is_open(curlun)) { // Get the complete pathname
|
||||
p = d_path(curlun->filp->f_path.dentry, curlun->filp->f_path.mnt,
|
||||
buf, PAGE_SIZE - 1);
|
||||
p = d_path(curlun->filp->f_path.dentry,
|
||||
curlun->filp->f_path.mnt, buf, PAGE_SIZE - 1);
|
||||
if (IS_ERR(p))
|
||||
rc = PTR_ERR(p);
|
||||
else {
|
||||
|
|
@ -3593,7 +3586,8 @@ static ssize_t show_file(struct device *dev, struct device_attribute *attr, char
|
|||
}
|
||||
|
||||
|
||||
static ssize_t store_ro(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
||||
static ssize_t store_ro(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
ssize_t rc = count;
|
||||
struct lun *curlun = dev_to_lun(dev);
|
||||
|
|
@ -3617,7 +3611,8 @@ static ssize_t store_ro(struct device *dev, struct device_attribute *attr, const
|
|||
return rc;
|
||||
}
|
||||
|
||||
static ssize_t store_file(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
||||
static ssize_t store_file(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct lun *curlun = dev_to_lun(dev);
|
||||
struct fsg_dev *fsg = dev_get_drvdata(dev);
|
||||
|
|
|
|||
Loading…
Reference in New Issue