diff options
| -rw-r--r-- | drivers/usb/gadget/file_storage.c | 129 |
1 files changed, 62 insertions, 67 deletions
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 0019116ee41..9998cd7af41 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -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; - 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; + if (length < 512) { + DBG(fsg, "%s, length %u:\n", label, length); + 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; } @@ -2741,9 +2729,10 @@ 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; fsg->short_packet_received = 0; @@ -3015,9 +3004,10 @@ 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; - } + } /* Queue a request to read a Bulk-only CBW */ set_bulk_out_req_length(fsg, bh, USB_BULK_CB_WRAP_LEN); @@ -3031,9 +3021,10 @@ 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(); rc = received_cbw(fsg, bh); bh->state = BUF_STATE_EMPTY; @@ -3042,9 +3033,10 @@ 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; - } + } /* Is the previous status interrupt request still busy? * The host is allowed to skip reading the status, @@ -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); |