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.nawro...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
 drivers/media/platform/s5p-fimc/fimc-capture.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c 
b/drivers/media/platform/s5p-fimc/fimc-capture.c
index 95e6a78..aad0850 100644
--- a/drivers/media/platform/s5p-fimc/fimc-capture.c
+++ b/drivers/media/platform/s5p-fimc/fimc-capture.c
@@ -1561,5 +1561,9 @@ 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);

--
1.7.9.5

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