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V4L/DVB: dvb: siano: free spinlock before schedule()

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Calling schedule() holding spinlock with disables irqs is improper. As
spinlock protects list coredev->buffers, it can be unlocked untill wakeup.
This bug was introduced in a9349315f6.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Kulikov Vasiliy 2010-07-27 15:42:40 -03:00 committed by Mauro Carvalho Chehab
parent e03b9843dc
commit d0a38ce27e
1 changed files with 4 additions and 2 deletions
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6
drivers/media/dvb/siano/smscoreapi.c
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@ -1113,9 +1113,11 @@ struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev)
*/
prepare_to_wait(&coredev->buffer_mng_waitq, &wait, TASK_INTERRUPTIBLE);
if (list_empty(&coredev->buffers))
if (list_empty(&coredev->buffers)) {
spin_unlock_irqrestore(&coredev->bufferslock, flags);
schedule();
spin_lock_irqsave(&coredev->bufferslock, flags);
}
finish_wait(&coredev->buffer_mng_waitq, &wait);