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[media] v4l: Validate fields in the core code for subdev EDID ioctls

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The subdev EDID ioctls receive a pad field that must reference an
existing pad and an EDID field that must point to a buffer. Validate
both fields in the core code instead of duplicating validation in all
drivers.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Laurent Pinchart
2014-01-29 10:07:13 -03:00
committed by Mauro Carvalho Chehab
parent 9cfd65e809
commit f2e9084779
5 changed files with 20 additions and 16 deletions
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2
drivers/media/i2c/adv7511.c
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@@ -783,8 +783,6 @@ static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
return -EINVAL;
if ((edid->blocks == 0) || (edid->blocks > 256))
return -EINVAL;
if (!edid->edid)
return -EINVAL;
if (!state->edid.segments) {
v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n");
return -ENODATA;