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authorIra Snyder <kernel@irasnyder.com>2006-11-20 07:20:48 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-11-26 08:52:37 -0200
commita5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d (patch)
tree88812d920d7a50a63abe123a7618c5eac2c6272a /drivers
parent30d9464c76743160612e7de0b2f5f656c78915d3 (diff)
downloadop-kernel-dev-a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d.zip
op-kernel-dev-a5bbc7d94cf1dcb2100eeaf68791a401ad7ce54d.tar.gz
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 'drivers')
-rw-r--r--drivers/media/video/saa6588.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c
index a81285c..7b9859c 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)) {
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