korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 12:28:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

floppy: use wait_event_interruptible

Browse Source 
Convert wait loops to use wait_event_ macros.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Stephen Hemminger 2010-06-15 13:21:11 +02:00 committed by Jens Axboe
parent 21af544804
commit b862f26fe1
1 changed files with 9 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/block/floppy.c
View File

@ -514,8 +514,6 @@ static unsigned long fdc_busy;
static DECLARE_WAIT_QUEUE_HEAD(fdc_wait);
static DECLARE_WAIT_QUEUE_HEAD(command_done);
#define NO_SIGNAL (!interruptible || !signal_pending(current))
/* Errors during formatting are counted here. */
static int format_errors;
@ -858,36 +856,15 @@ static void set_fdc(int drive)
}
/* locks the driver */
static int _lock_fdc(int drive, bool interruptible, int line)
static int lock_fdc(int drive, bool interruptible)
{
if (atomic_read(&usage_count) == 0) {
pr_err("Trying to lock fdc while usage count=0 at line %d\n",
line);
if (WARN(atomic_read(&usage_count) == 0,
"Trying to lock fdc while usage count=0\n"))
return -1;
}
if (test_and_set_bit(0, &fdc_busy)) {
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&fdc_wait, &wait);
if (wait_event_interruptible(fdc_wait, !test_and_set_bit(0, &fdc_busy)))
return -EINTR;
for (;;) {
set_current_state(TASK_INTERRUPTIBLE);
if (!test_and_set_bit(0, &fdc_busy))
break;
schedule();
if (!NO_SIGNAL) {
remove_wait_queue(&fdc_wait, &wait);
return -EINTR;
}
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&fdc_wait, &wait);
flush_scheduled_work();
}
command_status = FD_COMMAND_NONE;
__reschedule_timeout(drive, "lock fdc");
@ -895,9 +872,6 @@ static int _lock_fdc(int drive, bool interruptible, int line)
return 0;
}
#define lock_fdc(drive, interruptible) \
_lock_fdc(drive, interruptible, __LINE__)
/* unlocks the driver */
static void unlock_fdc(void)
{
@ -2015,25 +1989,10 @@ static int wait_til_done(void (*handler)(void), bool interruptible)
schedule_bh(handler);
if (command_status < 2 && NO_SIGNAL) {
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&command_done, &wait);
for (;;) {
set_current_state(interruptible ?
TASK_INTERRUPTIBLE :
TASK_UNINTERRUPTIBLE);
if (command_status >= 2 || !NO_SIGNAL)
break;
is_alive(__func__, "");
schedule();
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&command_done, &wait);
}
if (interruptible)
wait_event_interruptible(command_done, command_status >= 2);
else
wait_event(command_done, command_status >= 2);
if (command_status < 2) {
cancel_activity();