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media: v4l: fwnode: Make v4l2_fwnode_endpoint_free() safer

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Assign vep->link_frequencies to NULL after releasing its memory. Without
this change, multiple calls to v4l2_fwnode_endpoint_free() would result in
double kfree calls.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Sakari Ailus 2019-09-23 06:09:46 -03:00 committed by Mauro Carvalho Chehab
parent 8f4ac27af9
commit 355047f411
1 changed files with 1 additions and 0 deletions
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drivers/media/v4l2-core/v4l2-fwnode.c
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@ -512,6 +512,7 @@ void v4l2_fwnode_endpoint_free(struct v4l2_fwnode_endpoint *vep)
return; return;
kfree(vep->link_frequencies); kfree(vep->link_frequencies);
vep->link_frequencies = NULL;
} }
EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoint_free); EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoint_free);