path: root/drivers/media/platform
diff options
authorArnd Bergmann <arnd@arndb.de>2017-09-14 08:07:27 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2017-10-04 16:58:05 -0300
commit5dfbf6c51c72ede22975db1e2259c00ee0bfb7ff (patch)
tree72272b2693589a5b9f96928823beb08a83ef1d90 /drivers/media/platform
parentad62701720dd5d2a17c62f6c3bbd6ee629efcfaa (diff)
[media] rcar_drif: fix potential uninitialized variable use
Older compilers like gcc-4.6 may run into a case that returns an uninitialized variable from rcar_drif_enable_rx() if that function was ever called with an empty cur_ch_mask: drivers/media/platform/rcar_drif.c:658:2: error: ‘ret’ may be used uninitialized in this function [-Werror=uninitialized] Newer compilers don't have that problem as they optimize the 'ret' variable away and just return zero in that case. This changes the function to return -EINVAL for this particular failure, to make it consistent across all compiler versions. In case gcc gets changed to report a warning for it in the future, it's also a good idea to shut it up now. Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82203 Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform')
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/platform/rcar_drif.c b/drivers/media/platform/rcar_drif.c
index 522364ff0d5d..2c6afd38b78a 100644
--- a/drivers/media/platform/rcar_drif.c
+++ b/drivers/media/platform/rcar_drif.c
@@ -630,7 +630,7 @@ static int rcar_drif_enable_rx(struct rcar_drif_sdr *sdr)
unsigned int i;
u32 ctr;
- int ret;
+ int ret = -EINVAL;
* When both internal channels are enabled, they can be synchronized

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