VIDIOC_DQBUF failed: Resource temporarily unavailable

[yangthomas]

Hi,

     I use camera on platform of IMX6.Use selcect or epoll to control camera, but print this log.

VIDIOC_DQBUF failed: Resource temporarily unavailable

int epoll_wait(int epfd, struct epoll_event * events, int maxevents, int timeout);

timeout = -1;

[umit_kayacik]

Can you pls share the patch?

[igorpadykov]

Hi Yang

this error is V4L2 Capture IOCTLs error, described for example at

VIDIOC_DQBUF: Resource temporarily unavailable · Issue #3 · fsphil/fswebcam · GitHub

you may wish to test camera with FSL-UT-V4L2-capture tests described in

attached document sect.5.5.2 Video4Linux API test.

Best regards

igor

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[yangthomas · Accepted solution]

Thanks.

I slove it.

drivers/media/video/mxc/capture/mxc_v4l2_capture.c

epoll has a bug.

[rbabu]

Please share the patch to fix the issue.

[chrisroed]

Hi Thomas.

What is the epoll bug?

[yangthomas]

Camera can capture video.