[PATCH 1/3] drm/vc4: Expose gamma as atomic property

[kbuild test robot]

Hi Stefan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc4]
[also build test ERROR on next-20180316]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Stefan-Schake/drm-vc4-Atomic-color-management-support/20180318-120701
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/vc4/vc4_crtc.c: In function 'vc4_crtc_update_gamma_lut':
>> drivers/gpu/drm/vc4/vc4_crtc.c:305:30: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     struct drm_color_lut *lut = crtc->state->gamma_lut->data;
                                 ^~~~
   cc1: some warnings being treated as errors

vim +305 drivers/gpu/drm/vc4/vc4_crtc.c

   300	
   301	static void
   302	vc4_crtc_update_gamma_lut(struct drm_crtc *crtc)
   303	{
   304		struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc);
 > 305		struct drm_color_lut *lut = crtc->state->gamma_lut->data;
   306		u32 length = crtc->state->gamma_lut->length / sizeof(*lut);
   307		u32 i;
   308	
   309		for (i = 0; i < length; i++) {
   310			vc4_crtc->lut_r[i] = drm_color_lut_extract(lut[i].red, 8);
   311			vc4_crtc->lut_g[i] = drm_color_lut_extract(lut[i].green, 8);
   312			vc4_crtc->lut_b[i] = drm_color_lut_extract(lut[i].blue, 8);
   313		}
   314	
   315		vc4_crtc_lut_load(crtc);
   316	}
   317	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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