diff options
author | Stephen Hemminger <shemminger@vyatta.com> | 2010-06-15 15:21:11 +0400 |
---|---|---|
committer | Jens Axboe <jaxboe@fusionio.com> | 2010-08-07 20:15:41 +0400 |
commit | b862f26fe17df273167bd47df79e8742a1bf101c (patch) | |
tree | 7bd31baa632893b980cab3f28b04ced0b5b5079b /drivers/block | |
parent | 21af5448042a0962fb1df13a310bb363a8f6a8dc (diff) | |
download | linux-b862f26fe17df273167bd47df79e8742a1bf101c.tar.xz |
floppy: use wait_event_interruptible
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>
Diffstat (limited to 'drivers/block')
-rw-r--r-- | drivers/block/floppy.c | 59 |
1 files changed, 9 insertions, 50 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index fd7085aa999f..3fdceda85735 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -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); - - 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; - } - } + if (wait_event_interruptible(fdc_wait, !test_and_set_bit(0, &fdc_busy))) + 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(); |