Hi Adrian,
On Friday 18 July 2008, Adrian Sergiu DARABANT wrote:
> I have a similar Syntek camera 174F:8a51 that blocks on Failed to query
> some controls.Maybe in your case you'll have better luck. Mine is a 2M
> camera that works on windows but fails desperately on Linux. I did not
> manage yet to get a solution (it might be either the camera or the usb
> modules in Linux).
>
> With 2.6.25 kernels it behaves a little bit better but still not working.
Could you please try the following patch and report results here (including
all messages printed by the uvcvideo driver to the kernel log) ?
-----------------------------------------------------------------------------
Index: uvc_video.c
===================================================================
--- uvc_video.c (revision 230)
+++ uvc_video.c (working copy)
@@ -899,8 +899,7 @@
/* Some webcams don't suport GET_DEF request on the probe control. We
* fall back to GET_CUR if GET_DEF fails.
*/
- if ((ret = uvc_get_video_ctrl(video, probe, 1, GET_DEF)) < 0 &&
- (ret = uvc_get_video_ctrl(video, probe, 1, GET_CUR)) < 0)
+ if ((ret = uvc_get_video_ctrl(video, probe, 1, GET_CUR)))
return ret;
/* Check if the default format descriptor exists. Use the first
-----------------------------------------------------------------------------
Best regards,
Laurent Pinchart
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