>
> Hans
>
> > + }
> >
> > ctrl->dirty = 1;
> > ctrl->modified = 1;
> >
> >>
> >>> - Second value will be the cached one
> >>>
> >>> now the camera is at zoom 10
> >>> If you read the value, you will read the cached value
> >>>
> >>>> E.g.: the zoom control is at value 0 and I set it to 10, then I poll the zoom control
> >>>> value: will that report the intermediate values until it reaches 10? And when it is
> >>>> at 10, the control event is sent?
> >>>>
> >>>>>>>> Cc: stable@xxxxxxxxxxxxxxx
> >>>>>>>> Fixes: e5225c820c05 ("media: uvcvideo: Send a control event when a Control Change interrupt arrives")
> >>>>>>>> Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> >>>>>>>> ---
> >>>>>>>> drivers/media/usb/uvc/uvc_ctrl.c | 4 ++++
> >>>>>>>> 1 file changed, 4 insertions(+)
> >>>>>>>>
> >>>>>>>> diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
> >>>>>>>> index b6af4ff92cbd..3f8ae35cb3bc 100644
> >>>>>>>> --- a/drivers/media/usb/uvc/uvc_ctrl.c
> >>>>>>>> +++ b/drivers/media/usb/uvc/uvc_ctrl.c
> >>>>>>>> @@ -1955,6 +1955,10 @@ int uvc_ctrl_set(struct uvc_fh *handle,
> >>>>>>>> if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR))
> >>>>>>>> return -EACCES;
> >>>>>>>>
> >>>>>>>> + /* Other file handle is waiting a response from this async control. */
> >>>>>>>> + if (ctrl->handle && ctrl->handle != handle)
> >>>>>>>> + return -EBUSY;
> >>>>>>>> +
> >>>>>>>> /* Clamp out of range values. */
> >>>>>>>> switch (mapping->v4l2_type) {
> >>>>>>>> case V4L2_CTRL_TYPE_INTEGER:
> >>
> >> --
> >> Regards,
> >>
> >> Laurent Pinchart
> >
> >
> >
>
--
Ricardo Ribalda
