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media: dvb: move most compat_ioctl handling into drivers

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Most DVB audio and video ioctl commands are completely compatible,
and are implemented by just two drivers: ttpci and ivtv. In both
cases, we can use the same ioctl handler for both native and
compat ioctl handling, and remove the entries from the global
lookup table.

In case of ttpci, this directly hooks into the file_operations
structure, and for ivtv, we have to set the compat_ioctl32
method in v4l2_file_operations. For all I can tell, setting it
to video_ioctl2 will still do the right thing for all commands.

Note that for the VIDEO_STILLPICTURE and VIDEO_GET_EVENT commands,
a translation handler in fs/compat_ioctl.c is still used. This
works because the command numbers are different on 32-bit
systems.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Arnd Bergmann 2018-08-27 15:56:24 -04:00 committed by Mauro Carvalho Chehab
parent e6c8320648
commit 8a24280b11
3 changed files with 11 additions and 31 deletions
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9
drivers/media/pci/ivtv/ivtv-streams.c
View File

@ -51,6 +51,9 @@ static const struct v4l2_file_operations ivtv_v4l2_enc_fops = {
.write = ivtv_v4l2_write,
.open = ivtv_v4l2_open,
.unlocked_ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
#endif
.release = ivtv_v4l2_close,
.poll = ivtv_v4l2_enc_poll,
};
@ -61,6 +64,9 @@ static const struct v4l2_file_operations ivtv_v4l2_dec_fops = {
.write = ivtv_v4l2_write,
.open = ivtv_v4l2_open,
.unlocked_ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
#endif
.release = ivtv_v4l2_close,
.poll = ivtv_v4l2_dec_poll,
};
@ -69,6 +75,9 @@ static const struct v4l2_file_operations ivtv_v4l2_radio_fops = {
.owner = THIS_MODULE,
.open = ivtv_v4l2_open,
.unlocked_ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = video_ioctl2, /* for ivtv_default() */
#endif
.release = ivtv_v4l2_close,
.poll = ivtv_v4l2_enc_poll,
};

2
drivers/media/pci/ttpci/av7110_av.c
View File

@ -1533,6 +1533,7 @@ static const struct file_operations dvb_video_fops = {
.owner = THIS_MODULE,
.write = dvb_video_write,
.unlocked_ioctl = dvb_generic_ioctl,
.compat_ioctl = dvb_generic_ioctl,
.open = dvb_video_open,
.release = dvb_video_release,
.poll = dvb_video_poll,
@ -1552,6 +1553,7 @@ static const struct file_operations dvb_audio_fops = {
.owner = THIS_MODULE,
.write = dvb_audio_write,
.unlocked_ioctl = dvb_generic_ioctl,
.compat_ioctl = dvb_generic_ioctl,
.open = dvb_audio_open,
.release = dvb_audio_release,
.poll = dvb_audio_poll,

31
fs/compat_ioctl.c
View File

@ -1164,37 +1164,6 @@ COMPATIBLE_IOCTL(HIDIOCGFLAG)
COMPATIBLE_IOCTL(HIDIOCSFLAG)
COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
/* dvb */
COMPATIBLE_IOCTL(AUDIO_STOP)
COMPATIBLE_IOCTL(AUDIO_PLAY)
COMPATIBLE_IOCTL(AUDIO_PAUSE)
COMPATIBLE_IOCTL(AUDIO_CONTINUE)
COMPATIBLE_IOCTL(AUDIO_SELECT_SOURCE)
COMPATIBLE_IOCTL(AUDIO_SET_MUTE)
COMPATIBLE_IOCTL(AUDIO_SET_AV_SYNC)
COMPATIBLE_IOCTL(AUDIO_SET_BYPASS_MODE)
COMPATIBLE_IOCTL(AUDIO_CHANNEL_SELECT)
COMPATIBLE_IOCTL(AUDIO_GET_STATUS)
COMPATIBLE_IOCTL(AUDIO_GET_CAPABILITIES)
COMPATIBLE_IOCTL(AUDIO_CLEAR_BUFFER)
COMPATIBLE_IOCTL(AUDIO_SET_ID)
COMPATIBLE_IOCTL(AUDIO_SET_MIXER)
COMPATIBLE_IOCTL(AUDIO_SET_STREAMTYPE)
COMPATIBLE_IOCTL(VIDEO_STOP)
COMPATIBLE_IOCTL(VIDEO_PLAY)
COMPATIBLE_IOCTL(VIDEO_FREEZE)
COMPATIBLE_IOCTL(VIDEO_CONTINUE)
COMPATIBLE_IOCTL(VIDEO_SELECT_SOURCE)
COMPATIBLE_IOCTL(VIDEO_SET_BLANK)
COMPATIBLE_IOCTL(VIDEO_GET_STATUS)
COMPATIBLE_IOCTL(VIDEO_SET_DISPLAY_FORMAT)
COMPATIBLE_IOCTL(VIDEO_FAST_FORWARD)
COMPATIBLE_IOCTL(VIDEO_SLOWMOTION)
COMPATIBLE_IOCTL(VIDEO_GET_CAPABILITIES)
COMPATIBLE_IOCTL(VIDEO_CLEAR_BUFFER)
COMPATIBLE_IOCTL(VIDEO_SET_STREAMTYPE)
COMPATIBLE_IOCTL(VIDEO_SET_FORMAT)
COMPATIBLE_IOCTL(VIDEO_GET_SIZE)
/* joystick */
COMPATIBLE_IOCTL(JSIOCGVERSION)
COMPATIBLE_IOCTL(JSIOCGAXES)