redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

[media] feature_removal_schedule.txt: mark VIDIOC_*_OLD ioctls to die 

There are some old broken definitions of ioctl's, where the
read/write arguments were marked wrong. The last one were added
on 2.6.6 kernel. Remove them, in order to cleanup some
copy_from_user/copy_to_user logic done inside V4L core.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
wifi-calibration
Mauro Carvalho Chehab 2010-12-27 11:14:52 -03:00
parent 0334c8a52a
commit 1035758d5b
1 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Documentation/feature-removal-schedule.txt
View File

@ -112,6 +112,27 @@ Who: Mauro Carvalho Chehab <mchehab@infradead.org>
---------------------------
What: Video4Linux: Remove obsolete ioctl's
When: kernel 2.6.39
Files: include/media/videodev2.h
Why: Some ioctl's were defined wrong on 2.6.2 and 2.6.6, using the wrong
type of R/W arguments. They were fixed, but the old ioctl names are
still there, maintained to avoid breaking binary compatibility:
#define VIDIOC_OVERLAY_OLD _IOWR('V', 14, int)
#define VIDIOC_S_PARM_OLD _IOW('V', 22, struct v4l2_streamparm)
#define VIDIOC_S_CTRL_OLD _IOW('V', 28, struct v4l2_control)
#define VIDIOC_G_AUDIO_OLD _IOWR('V', 33, struct v4l2_audio)
#define VIDIOC_G_AUDOUT_OLD _IOWR('V', 49, struct v4l2_audioout)
#define VIDIOC_CROPCAP_OLD _IOR('V', 58, struct v4l2_cropcap)
There's no sense on preserving those forever, as it is very doubtful
that someone would try to use a such old binary with a modern kernel.
Removing them will allow us to remove some magic done at the V4L ioctl
handler.
Who: Mauro Carvalho Chehab <mchehab@infradead.org>
---------------------------
What: sys_sysctl
When: September 2010
Option: CONFIG_SYSCTL_SYSCALL