From d0a38ce27e1b11116f02835b076fcb79db987e2c Mon Sep 17 00:00:00 2001 From: Kulikov Vasiliy Date: Tue, 27 Jul 2010 15:42:40 -0300 Subject: [PATCH] V4L/DVB: dvb: siano: free spinlock before schedule() 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 a9349315f65cd6a16e8fab1f6cf0fd40f379c4db. Signed-off-by: Kulikov Vasiliy Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/siano/smscoreapi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb/siano/smscoreapi.c b/drivers/media/dvb/siano/smscoreapi.c index 7f2c94a15ab1..d93468cd3a85 100644 --- a/drivers/media/dvb/siano/smscoreapi.c +++ b/drivers/media/dvb/siano/smscoreapi.c @@ -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); -- 2.20.1