media: v4l2-subdev: without controls return -ENOTTY

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If the subdev did not define any controls, then return -ENOTTY if
userspace attempts to call these ioctls.

The control framework functions will return -EINVAL, not -ENOTTY if
vfh->ctrl_handler is NULL.

Several of these framework functions are also called directly from
drivers, so I don't want to change the error code there.

Found with vimc and v4l2-compliance.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

...

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Hans Verkuil 2018-02-02 08:05:23 -05:00 • committed by Mauro Carvalho Chehab

parent 1ceda32bf3

commit 3103c7b4ad

1 changed files with 24 additions and 0 deletions

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drivers/media/v4l2-core/v4l2-subdev.c

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