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>

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index fd7085a..3fdceda 100644 (file)
--- 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();