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media: vimc: fix start stream when link is disabled 

If link is disabled, media_entity_remote_pad returns NULL, causing a
NULL pointer deference.
Ignore links that are not enabled instead.

Signed-off-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Helen Fornazier 2018-12-07 12:56:41 -05:00 committed by Mauro Carvalho Chehab
parent ee494cf377
commit e159b6074c
1 changed files with 2 additions and 0 deletions
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2
drivers/media/platform/vimc/vimc-common.c
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@ -276,6 +276,8 @@ int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
/* Start the stream in the subdevice direct connected */ /* Start the stream in the subdevice direct connected */
pad = media_entity_remote_pad(&ent->pads[i]); pad = media_entity_remote_pad(&ent->pads[i]);
if (!pad)
continue;
if (!is_media_entity_v4l2_subdev(pad->entity)) if (!is_media_entity_v4l2_subdev(pad->entity))
return -EINVAL; return -EINVAL;