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authorSylwester Nawrocki <s.nawrocki@samsung.com>2012-12-05 13:52:00 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-01-06 09:23:56 -0200
commit6612545ffb3c14ccb5fa265992cc1b40db3ff463 (patch)
treedc87e7cc2cfe95b99302904ab9ba37b5db12c1a4 /drivers
parentff4e3fe86f6c5e8c746f07e232a89330cd3cf1a9 (diff)
[media] s5p-fimc: Avoid possible NULL pointer dereference in set_fmt op
This fixes following issue found with a static analysis tool: Pointer 'ffmt' returned from call to function 'fimc_capture_try_format' at line 1522 may be NULL and may be dereferenced at line 1535. Although it shouldn't happen in practice, add the NULL pointer check to be on the safe side. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/platform/s5p-fimc/fimc-capture.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c b/drivers/media/platform/s5p-fimc/fimc-capture.c
index 95e6a7820b5e..aad0850d0c01 100644
--- a/drivers/media/platform/s5p-fimc/fimc-capture.c
+++ b/drivers/media/platform/s5p-fimc/fimc-capture.c
@@ -1561,6 +1561,10 @@ static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
*mf = fmt->format;
return 0;
}
+ /* There must be a bug in the driver if this happens */
+ if (WARN_ON(ffmt == NULL))
+ return -EINVAL;
+
/* Update RGB Alpha control state and value range */
fimc_alpha_ctrl_update(ctx);

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