commit
181a4a2d5a0a7b43cab08a70710d727e7764ccdd upstream.
If the ioctl returned -ENOTTY, then don't bother copying
back the result as there is no point.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
/* Handles IOCTL */
err = func(file, cmd, parg);
- if (err == -ENOIOCTLCMD)
- err = -EINVAL;
+ if (err == -ENOTTY || err == -ENOIOCTLCMD) {
+ err = -ENOTTY;
+ goto out;
+ }
if (has_array_args) {
*kernel_ptr = user_ptr;