[PATCH v4 18/25] drm/renesas/rz-du: Compute dumb-buffer sizes with drm_mode_size_dumb()

[kernel test robot]

Hi Thomas,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20250311]
[also build test ERROR on v6.14-rc6]
[cannot apply to drm-exynos/exynos-drm-next rockchip/for-next tegra/for-next drm-xe/drm-xe-next linus/master v6.14-rc6 v6.14-rc5 v6.14-rc4]
[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/Thomas-Zimmermann/drm-dumb-buffers-Sanitize-output-on-errors/20250311-235818
base:   next-20250311
patch link:    https://lore.kernel.org/r/20250311155120.442633-19-tzimmermann%40suse.de
patch subject: [PATCH v4 18/25] drm/renesas/rz-du: Compute dumb-buffer sizes with drm_mode_size_dumb()
config: powerpc64-randconfig-003-20250313 (https://download.01.org/0day-ci/archive/20250313/202503130956.VyNIuYfU-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250313/202503130956.VyNIuYfU-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503130956.VyNIuYfU-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c: In function 'rzg2l_du_dumb_create':
>> drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c:80:15: error: implicit declaration of function 'drm_mode_size_dumb'; did you mean 'drm_mode_set_name'? [-Wimplicit-function-declaration]
      80 |         ret = drm_mode_size_dumb(dev, args, 16 * args->bpp / 8, 0);
         |               ^~~~~~~~~~~~~~~~~~
         |               drm_mode_set_name


vim +80 drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c

    70	
    71	/* -----------------------------------------------------------------------------
    72	 * Frame buffer
    73	 */
    74	
    75	int rzg2l_du_dumb_create(struct drm_file *file, struct drm_device *dev,
    76				 struct drm_mode_create_dumb *args)
    77	{
    78		int ret;
    79	
  > 80		ret = drm_mode_size_dumb(dev, args, 16 * args->bpp / 8, 0);
    81		if (ret)
    82			return ret;
    83	
    84		return drm_gem_dma_dumb_create_internal(file, dev, args);
    85	}
    86	

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