Hi Yunfei,

On Wed, Jun 17, 2020 at 09:49:27AM +0800, Yunfei Dong wrote:

This patch adds support for the V4L2_BUF_CAP_SUPPORTS_RO_REQUESTS
flag. This flag is used for RO Request.

I think this patch series lacks two major things:
 - a cover letter explaining the feature and what it is needed/useful
   for,
 - a user - is there an upstream driver which would implement this
   feature and benefit from it?

Best regards,
Tomasz