Re: [PATCHv18 16/35] v4l2-ctrls: add v4l2_ctrl_request_hdl_find/put/ctrl_find functions

Em Tue, 14 Aug 2018 16:20:28 +0200 Hans Verkuil escreveu: > If a driver needs to find/inspect the controls set in a request then > it can use these functions. > > E.g. to check if a required control is set in a request use this in the > req_validate() implementation: > > int res =

[PATCHv18 16/35] v4l2-ctrls: add v4l2_ctrl_request_hdl_find/put/ctrl_find functions

If a driver needs to find/inspect the controls set in a request then it can use these functions. E.g. to check if a required control is set in a request use this in the req_validate() implementation: int res = -EINVAL; hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl);