From a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d Mon Sep 17 00:00:00 2001 From: Ira Snyder Date: Mon, 20 Nov 2006 07:20:48 -0300 Subject: [PATCH] V4L/DVB (4849): Add missing spin_unlock to saa6588 decoder driver Sparse noticed a lock imbalance in read_from_buf(). Further inspection shows that the lock should not be held when the function exits. This adds a spin_unlock_irqrestore(), so that every exit path of the read_from_buf() function is consistent. The unlock was missing on an error path. Signed-off-by: Ira W. Snyder Signed-off-by: Hans J. Koch Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa6588.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c index a81285ca7d5..7b9859c3301 100644 --- a/drivers/media/video/saa6588.c +++ b/drivers/media/video/saa6588.c @@ -212,8 +212,10 @@ static void read_from_buf(struct saa6588 *s, struct rds_command *a) if (rd_blocks > s->block_count) rd_blocks = s->block_count; - if (!rd_blocks) + if (!rd_blocks) { + spin_unlock_irqrestore(&s->lock, flags); return; + } for (i = 0; i < rd_blocks; i++) { if (block_to_user_buf(s, buf_ptr)) { -- 2.20.1