On Tue January 22 2013 23:14:50 Mauro Carvalho Chehab wrote:
> Em Tue, 22 Jan 2013 20:51:55 +0100
> Frank Schäfer <fschaefer.oss@xxxxxxxxxxxxxx> escreveu:
>
> > The buffer ioctls (VIDIOC_REQBUFS, VIDIOC_QUERYBUF, VIDIOC_QBUF, VIDIOC_DQBUF,
> > VIDIOC_EXPBUF, VIDIOC_CREATE_BUFS, VIDIOC_PREPARE_BUF) are not applicable for
> > radio devices. Hence, they should be set valid only for non-radio devices in
> > determine_valid_ioctls().
>
> Hmm... wouldn't it could break or cause regressions to pvrusb2 (and cx18/ivtv?)?
cx18/ivtv do not stream audio over the radio node, they have a specialized video
device for that (and these days an alsa driver as well).
pvrusb2 does stream over the radio node, but only using read(). It doesn't use the
stream I/O ioctls at all.
So I'm giving this patch my:
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Regards,
Hans
>
> Regards,
> Mauro
> >
> > Signed-off-by: Frank Schäfer <fschaefer.oss@xxxxxxxxxxxxxx>
> > ---
> > drivers/media/v4l2-core/v4l2-dev.c | 14 +++++++-------
> > 1 Datei geändert, 7 Zeilen hinzugefügt(+), 7 Zeilen entfernt(-)
> >
> > diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> > index 98dcad9..51b3a77 100644
> > --- a/drivers/media/v4l2-core/v4l2-dev.c
> > +++ b/drivers/media/v4l2-core/v4l2-dev.c
> > @@ -568,11 +568,6 @@ static void determine_valid_ioctls(struct video_device *vdev)
> > if (ops->vidioc_s_priority ||
> > test_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags))
> > set_bit(_IOC_NR(VIDIOC_S_PRIORITY), valid_ioctls);
> > - SET_VALID_IOCTL(ops, VIDIOC_REQBUFS, vidioc_reqbufs);
> > - SET_VALID_IOCTL(ops, VIDIOC_QUERYBUF, vidioc_querybuf);
> > - SET_VALID_IOCTL(ops, VIDIOC_QBUF, vidioc_qbuf);
> > - SET_VALID_IOCTL(ops, VIDIOC_EXPBUF, vidioc_expbuf);
> > - SET_VALID_IOCTL(ops, VIDIOC_DQBUF, vidioc_dqbuf);
> > SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> > SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> > /* Note: the control handler can also be passed through the filehandle,
> > @@ -605,8 +600,6 @@ static void determine_valid_ioctls(struct video_device *vdev)
> > SET_VALID_IOCTL(ops, VIDIOC_DQEVENT, vidioc_subscribe_event);
> > SET_VALID_IOCTL(ops, VIDIOC_SUBSCRIBE_EVENT, vidioc_subscribe_event);
> > SET_VALID_IOCTL(ops, VIDIOC_UNSUBSCRIBE_EVENT, vidioc_unsubscribe_event);
> > - SET_VALID_IOCTL(ops, VIDIOC_CREATE_BUFS, vidioc_create_bufs);
> > - SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> > if (ops->vidioc_enum_freq_bands || ops->vidioc_g_tuner || ops->vidioc_g_modulator)
> > set_bit(_IOC_NR(VIDIOC_ENUM_FREQ_BANDS), valid_ioctls);
> >
> > @@ -672,6 +665,13 @@ static void determine_valid_ioctls(struct video_device *vdev)
> > }
> > if (!is_radio) {
> > /* ioctls valid for video or vbi */
> > + SET_VALID_IOCTL(ops, VIDIOC_REQBUFS, vidioc_reqbufs);
> > + SET_VALID_IOCTL(ops, VIDIOC_QUERYBUF, vidioc_querybuf);
> > + SET_VALID_IOCTL(ops, VIDIOC_QBUF, vidioc_qbuf);
> > + SET_VALID_IOCTL(ops, VIDIOC_EXPBUF, vidioc_expbuf);
> > + SET_VALID_IOCTL(ops, VIDIOC_DQBUF, vidioc_dqbuf);
> > + SET_VALID_IOCTL(ops, VIDIOC_CREATE_BUFS, vidioc_create_bufs);
> > + SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> > if (ops->vidioc_s_std)
> > set_bit(_IOC_NR(VIDIOC_ENUMSTD), valid_ioctls);
> > if (ops->vidioc_g_std || vdev->current_norm)
>
>
>
>
> Cheers,
> Mauro
>
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