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authorHans Verkuil <hverkuil@xs4all.nl>2009-02-14 19:58:33 -0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-16 17:32:32 -0700
commitbbbfbf6d74e6054c4f6af2dd7fe95c5551b6413a (patch)
tree2cc7d8f243d9b3fc7e921d0f44cd8664e04f9a79 /drivers
parentef956570e79d30cf9a25e5a1a5464f75a8989181 (diff)
V4L: ivtv: fix decoder crash regression
(cherry picked from commit ac9575f75c52bcb455120f8c43376b556acba048) The video_ioctl2 conversion of ivtv in kernel 2.6.27 introduced a bug causing decoder commands to crash. The decoder commands should have been handled from the video_ioctl2 default handler, ensuring correct mapping of the argument between user and kernel space. Unfortunately they ended up before the video_ioctl2 call, causing random crashes. Thanks to hannes@linus.priv.at for testing and helping me track down the cause! Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/ivtv/ivtv-ioctl.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/media/video/ivtv/ivtv-ioctl.c b/drivers/media/video/ivtv/ivtv-ioctl.c
index 4bae38d21ef6..999f037dc10b 100644
--- a/drivers/media/video/ivtv/ivtv-ioctl.c
+++ b/drivers/media/video/ivtv/ivtv-ioctl.c
@@ -1750,6 +1750,18 @@ static int ivtv_default(struct file *file, void *fh, int cmd, void *arg)
break;
}
+ case IVTV_IOC_DMA_FRAME:
+ case VIDEO_GET_PTS:
+ case VIDEO_GET_FRAME_COUNT:
+ case VIDEO_GET_EVENT:
+ case VIDEO_PLAY:
+ case VIDEO_STOP:
+ case VIDEO_FREEZE:
+ case VIDEO_CONTINUE:
+ case VIDEO_COMMAND:
+ case VIDEO_TRY_COMMAND:
+ return ivtv_decoder_ioctls(file, cmd, (void *)arg);
+
default:
return -EINVAL;
}
@@ -1792,18 +1804,6 @@ static long ivtv_serialized_ioctl(struct ivtv *itv, struct file *filp,
ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
return 0;
- case IVTV_IOC_DMA_FRAME:
- case VIDEO_GET_PTS:
- case VIDEO_GET_FRAME_COUNT:
- case VIDEO_GET_EVENT:
- case VIDEO_PLAY:
- case VIDEO_STOP:
- case VIDEO_FREEZE:
- case VIDEO_CONTINUE:
- case VIDEO_COMMAND:
- case VIDEO_TRY_COMMAND:
- return ivtv_decoder_ioctls(filp, cmd, (void *)arg);
-
default:
break;
}