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| author | Ira Snyder <kernel@irasnyder.com> | 2006-11-20 11:20:48 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-11-26 11:52:37 +0100 |
| commit | a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d (patch) | |
| tree | 88812d920d7a50a63abe123a7618c5eac2c6272a /drivers/media/video/saa6588.c | |
| parent | V4L/DVB (4832): Fix uninitialised variable in dvb_frontend_swzigzag (diff) | |
| download | linux-a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d.tar.xz linux-a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d.zip | |
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 <devel@irasnyder.com>
Signed-off-by: Hans J. Koch <koch@hjk-az.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/media/video/saa6588.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c index a81285ca7d5b..7b9859c33018 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)) { |