Hi All, I was trying to implement media requests on a video capture device on kernel version 6.1. On my video capture device driver I configured the q settings as q->min_buffers_needed = 4; q->supports_requests = true; To make the application work however I had to comment out the following lines from videobuf2-core.c /* * This combination is not allowed since a non-zero value of * q->min_queued_buffers can cause vb2_core_qbuf() to fail if * it has to call start_streaming(), and the Request API expects * that queueing a request (and thus queueing a buffer contained * in that request) will always succeed. There is no method of * propagating an error back to userspace. */ //if (WARN_ON(q->supports_requests && q->min_queued_buffers)) // return -EINVAL; Regular capture would not work without min_buffers_needed being set and requests wouldn't work without supports_requests being set. Does this mean that media requests are not supported on video capture devices ? Kindly advise on how to proceed. -- Regards, Karthik Poduval
