[PATCH 2/2] drm/nouveau/kms: Add INHERIT ioctl to nvkm/nvif for reading IOR state

[kernel test robot]

Hi Lyude,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.3-rc5 next-20230406]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Lyude-Paul/drm-nouveau-kms-Add-INHERIT-ioctl-to-nvkm-nvif-for-reading-IOR-state/20230408-062329
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20230407222133.1425969-2-lyude%40redhat.com
patch subject: [PATCH 2/2] drm/nouveau/kms: Add INHERIT ioctl to nvkm/nvif for reading IOR state
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230408/202304080927.xI7Meodx-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0
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/a3d963915cf6f2d87b57146f7bc57a6a89d90cf6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Lyude-Paul/drm-nouveau-kms-Add-INHERIT-ioctl-to-nvkm-nvif-for-reading-IOR-state/20230408-062329
        git checkout a3d963915cf6f2d87b57146f7bc57a6a89d90cf6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/gpu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304080927.xI7Meodx-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/nouveau/dispnv50/disp.c:2554:1: warning: no previous prototype for 'nv50_display_read_hw_state' [-Wmissing-prototypes]
    2554 | nv50_display_read_hw_state(struct nouveau_drm *drm)
         | ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/nouveau/dispnv50/disp.c:2618:1: warning: no previous prototype for 'nv50_display_create' [-Wmissing-prototypes]
    2618 | nv50_display_create(struct drm_device *dev)
         | ^~~~~~~~~~~~~~~~~~~


vim +/nv50_display_read_hw_state +2554 drivers/gpu/drm/nouveau/dispnv50/disp.c

  2551	
  2552	/* Read back the currently programmed display state */
  2553	void
> 2554	nv50_display_read_hw_state(struct nouveau_drm *drm)
  2555	{
  2556		struct drm_device *dev = drm->dev;
  2557		struct drm_encoder *encoder;
  2558		struct drm_modeset_acquire_ctx ctx;
  2559		struct nv50_disp *disp = nv50_disp(dev);
  2560		int ret;
  2561	
  2562		DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
  2563	
  2564		drm_for_each_encoder(encoder, dev) {
  2565			if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST)
  2566				continue;
  2567	
  2568			nv50_display_read_hw_or_state(dev, disp, nouveau_encoder(encoder));
  2569		}
  2570	
  2571		DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
  2572	}
  2573	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests