diff options
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-video.c | 4 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_driver.c | 14 | ||||
| -rw-r--r-- | drivers/media/usb/uvc/uvc_video.c | 8 |
3 files changed, 21 insertions, 5 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 6cfcdcea27e0..873948e429e8 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -930,6 +930,8 @@ int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count) em28xx_videodbg("%s\n", __func__); + dev->v4l2->field_count = 0; + /* Make sure streaming is not already in progress for this type of filehandle (e.g. video, vbi) */ rc = res_get(dev, vq->type); @@ -1149,8 +1151,6 @@ static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) { struct em28xx *dev = priv; - dev->v4l2->field_count = 0; - /* * In the case of non-AC97 volume controls, we still need * to do some setups at em28xx, in order to mute/unmute diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 885f689ac870..f2e3fdf385cc 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1019,11 +1019,19 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - /* Make sure the terminal type MSB is not null, otherwise it - * could be confused with a unit. + /* + * Reject invalid terminal types that would cause issues: + * + * - The high byte must be non-zero, otherwise it would be + * confused with a unit. + * + * - Bit 15 must be 0, as we use it internally as a terminal + * direction flag. + * + * Other unknown types are accepted. */ type = get_unaligned_le16(&buffer[4]); - if ((type & 0xff00) == 0) { + if ((type & 0x7f00) == 0 || (type & 0x8000) != 0) { uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " "interface %d INPUT_TERMINAL %d has invalid " "type 0x%04x, skipping\n", udev->devnum, diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index a4048a04d236..a550dbe36dc5 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -638,6 +638,14 @@ void uvc_video_clock_update(struct uvc_streaming *stream, if (!uvc_hw_timestamps_param) return; + /* + * We will get called from __vb2_queue_cancel() if there are buffers + * done but not dequeued by the user, but the sample array has already + * been released at that time. Just bail out in that case. + */ + if (!clock->samples) + return; + spin_lock_irqsave(&clock->lock, flags); if (clock->count < clock->size) |