diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-06 19:08:08 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 22:53:38 +0200 |
| commit | 9190d191b1b814dfb488125b54cf0de6eedd9220 (patch) | |
| tree | a0d4888daa6b56ff06c2296b9e7b83b904682271 | |
| parent | [media] DocBook/dvb: Use generic descriptions for the video API (diff) | |
| download | linux-9190d191b1b814dfb488125b54cf0de6eedd9220.tar.xz linux-9190d191b1b814dfb488125b54cf0de6eedd9220.zip | |
[media] v4l2 core: return -ENOTTY if an ioctl doesn't exist
Currently, -EINVAL is used to return either when an IOCTL is not
implemented, or if the ioctl was not implemented.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | Documentation/DocBook/media/v4l/gen-errors.xml | 13 | ||||
| -rw-r--r-- | Documentation/DocBook/media/v4l/v4l2.xml | 2 | ||||
| -rw-r--r-- | drivers/media/video/v4l2-ioctl.c | 4 |
3 files changed, 10 insertions, 9 deletions
diff --git a/Documentation/DocBook/media/v4l/gen-errors.xml b/Documentation/DocBook/media/v4l/gen-errors.xml index 7c1980e8747b..5bbf3ce1973a 100644 --- a/Documentation/DocBook/media/v4l/gen-errors.xml +++ b/Documentation/DocBook/media/v4l/gen-errors.xml @@ -31,13 +31,6 @@ ioctl requests for specific causes.</entry> </row> <row> - <entry>EINVAL or ENOTTY</entry> - <entry>The ioctl is not supported by the driver, actually meaning that - the required functionality is not available, or the file - descriptor is not for a media device. The usage of EINVAL is - deprecated and will be fixed on a latter patch.</entry> - </row> - <row> <entry>ENODEV</entry> <entry>Device not found or was removed.</entry> </row> @@ -46,6 +39,12 @@ <entry>There's not enough memory to handle the desired operation.</entry> </row> <row> + <entry>ENOTTY</entry> + <entry>The ioctl is not supported by the driver, actually meaning that + the required functionality is not available, or the file + descriptor is not for a media device.</entry> + </row> + <row> <entry>ENOSPC</entry> <entry>On USB devices, the stream ioctl's can return this error, meaning that this request would overcommit the usb bandwidth reserved diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml index c5ee3982cff5..43386a6aef76 100644 --- a/Documentation/DocBook/media/v4l/v4l2.xml +++ b/Documentation/DocBook/media/v4l/v4l2.xml @@ -132,7 +132,9 @@ applications. --> <date>2011-06-27</date> <authorinitials>mcc, po</authorinitials> <revremark>Documented that VIDIOC_QUERYCAP now returns a per-subsystem version instead of a per-driver one.</revremark> + <revremark>Standardize an error code for invalid ioctl.</revremark> </revision> + <revision> <revnumber>2.6.39</revnumber> <date>2011-03-01</date> diff --git a/drivers/media/video/v4l2-ioctl.c b/drivers/media/video/v4l2-ioctl.c index 29f7a7df34c3..002ce1363443 100644 --- a/drivers/media/video/v4l2-ioctl.c +++ b/drivers/media/video/v4l2-ioctl.c @@ -543,12 +543,12 @@ static long __video_do_ioctl(struct file *file, struct v4l2_fh *vfh = NULL; struct v4l2_format f_copy; int use_fh_prio = 0; - long ret = -EINVAL; + long ret = -ENOTTY; if (ops == NULL) { printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n", vfd->name); - return -EINVAL; + return ret; } if ((vfd->debug & V4L2_DEBUG_IOCTL) && |