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V4L/DVB (12327): uvcvideo: Add PROBE_DEF quirk and enable it for the MT6227 device

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At least one MT6227 model crashes when receiving a GET_DEF request on the
video probe control. As the various models can't be told apart based on the
descriptors, add a PROBE_DEF quirk to avoid sending the GET_DEF request and
enable the quirk for all models.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2009-07-19 18:39:56 -03:00 committed by Mauro Carvalho Chehab
parent 76594c5315
commit bab6f66c08
3 changed files with 6 additions and 1 deletions
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3
drivers/media/video/uvc/uvc_driver.c
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@ -1884,7 +1884,8 @@ static struct usb_device_id uvc_ids[] = {
.bInterfaceClass = USB_CLASS_VIDEO,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 0,
.driver_info = UVC_QUIRK_PROBE_MINMAX },
.driver_info = UVC_QUIRK_PROBE_MINMAX
| UVC_QUIRK_PROBE_DEF },
/* Syntek (HP Spartan) */
{ .match_flags = USB_DEVICE_ID_MATCH_DEVICE
| USB_DEVICE_ID_MATCH_INT_INFO,

3
drivers/media/video/uvc/uvc_video.c
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@ -128,6 +128,9 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
if (data == NULL)
return -ENOMEM;
if ((video->dev->quirks & UVC_QUIRK_PROBE_DEF) && query == UVC_GET_DEF)
return -EIO;
ret = __uvc_query_ctrl(video->dev, query, 0, video->streaming->intfnum,
probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data,
size, UVC_CTRL_STREAMING_TIMEOUT);

1
drivers/media/video/uvc/uvcvideo.h
View File

@ -156,6 +156,7 @@ struct uvc_xu_control {
#define UVC_QUIRK_STREAM_NO_FID 0x00000010
#define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020
#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
#define UVC_QUIRK_PROBE_DEF 0x00000100
/* Format flags */
#define UVC_FMT_FLAG_COMPRESSED 0x00000001