Re: [PATCH v1 5/6] media: uvcvideo: Initialize roi to default value

[kernel test robot <lkp@intel.com>]

Hi Yunke,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on media-tree/master]
[also build test ERROR on linus/master v5.18-rc7 next-20220513]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/intel-lab-lkp/linux/commits/Yunke-Cao/media-Implement-UVC-v1-5-ROI/20220516-172509
base:   git://linuxtv.org/media_tree.git master
config: i386-buildonly-randconfig-r002-20220516 (https://download.01.org/0day-ci/archive/20220516/202205162134.uZvFM4c1-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 853fa8ee225edf2d0de94b0dcbd31bea916e825e)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/453e68b0e012e424659c3fd4c4c7824ad768f440
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yunke-Cao/media-Implement-UVC-v1-5-ROI/20220516-172509
        git checkout 453e68b0e012e424659c3fd4c4c7824ad768f440
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/media/usb/uvc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/media/usb/uvc/uvc_ctrl.c:2587:44: error: use of undeclared identifier 'camera_entity'
                               uvc_entity_match_guid(ctrl->entity, camera_entity))
                                                                   ^
   1 error generated.


vim +/camera_entity +2587 drivers/media/usb/uvc/uvc_ctrl.c

  2551	
  2552	/*
  2553	 * Add control information and hardcoded stock control mappings to the given
  2554	 * device.
  2555	 */
  2556	static void uvc_ctrl_init_ctrl(struct uvc_video_chain *chain,
  2557				       struct uvc_control *ctrl)
  2558	{
  2559		const struct uvc_control_info *info = uvc_ctrls;
  2560		const struct uvc_control_info *iend = info + ARRAY_SIZE(uvc_ctrls);
  2561		const struct uvc_control_mapping *mapping = uvc_ctrl_mappings;
  2562		const struct uvc_control_mapping *mend =
  2563			mapping + ARRAY_SIZE(uvc_ctrl_mappings);
  2564	
  2565		/* XU controls initialization requires querying the device for control
  2566		 * information. As some buggy UVC devices will crash when queried
  2567		 * repeatedly in a tight loop, delay XU controls initialization until
  2568		 * first use.
  2569		 */
  2570		if (UVC_ENTITY_TYPE(ctrl->entity) == UVC_VC_EXTENSION_UNIT)
  2571			return;
  2572	
  2573		for (; info < iend; ++info) {
  2574			if (uvc_entity_match_guid(ctrl->entity, info->entity) &&
  2575			    ctrl->index == info->index) {
  2576				uvc_ctrl_add_info(chain->dev, ctrl, info);
  2577				/*
  2578				 * Retrieve control flags from the device. Ignore errors
  2579				 * and work with default flag values from the uvc_ctrl
  2580				 * array when the device doesn't properly implement
  2581				 * GET_INFO on standard controls.
  2582				 */
  2583				uvc_ctrl_get_flags(chain->dev, ctrl, &ctrl->info);
  2584	
  2585				if (ctrl->info.selector ==
  2586					UVC_CT_REGION_OF_INTEREST_CONTROL &&
> 2587				    uvc_entity_match_guid(ctrl->entity, camera_entity))
  2588					uvc_ctrl_init_roi(chain->dev, ctrl);
  2589				break;
  2590			 }
  2591		}
  2592	
  2593		if (!ctrl->initialized)
  2594			return;
  2595	
  2596		for (; mapping < mend; ++mapping) {
  2597			if (uvc_entity_match_guid(ctrl->entity, mapping->entity) &&
  2598			    ctrl->info.selector == mapping->selector)
  2599				__uvc_ctrl_add_mapping(chain, ctrl, mapping);
  2600		}
  2601	}
  2602	

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