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media: exynos4-is: Check pipe is valid before calling subdev 

If the subdev is not yet present (probably because the subdev
module has not yet been loaded), the pipe will be NULL. Make sure
that this is not the case before attempting to call the op.

Signed-off-by: Simon Shields <simon@lineageos.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Simon Shields 2017-11-27 08:12:41 -05:00 committed by Mauro Carvalho Chehab
parent 2d41a0c9ae
commit 3090a1915e
1 changed files with 2 additions and 1 deletions
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3
include/media/drv-intf/exynos-fimc.h
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@ -155,7 +155,8 @@ static inline struct exynos_video_entity *vdev_to_exynos_video_entity(
}
#define fimc_pipeline_call(ent, op, args...) \
(!(ent) ? -ENOENT : (((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
((!(ent) || !(ent)->pipe) ? -ENOENT : \
(((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
(ent)->pipe->ops->op(((ent)->pipe), ##args) : -ENOIOCTLCMD)) \
#endif /* S5P_FIMC_H_ */