Hi Maíra, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on 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/Ma-ra-Canal/drm-vkms-add-module-parameter-to-set-background-color/20230407-012233 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20230406172002.124456-1-mcanal%40igalia.com patch subject: [PATCH] drm/vkms: add module parameter to set background color config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20230407/202304070429.b1akot5a-...@intel.com/config) compiler: powerpc-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/d725068207852d3b6a0dd795bf224422804101e1 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ma-ra-Canal/drm-vkms-add-module-parameter-to-set-background-color/20230407-012233 git checkout d725068207852d3b6a0dd795bf224422804101e1 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <l...@intel.com> | Link: https://lore.kernel.org/oe-kbuild-all/202304070429.b1akot5a-...@intel.com/ All warnings (new ones prefixed by >>): drivers/gpu/drm/vkms/vkms_composer.c: In function 'blend': >> drivers/gpu/drm/vkms/vkms_composer.c:93:59: warning: right shift count >= >> width of type [-Wshift-count-overflow] 93 | .r = (*vkms_dev->config->background_color >> 32) & 0xffff, | ^~ vim +93 drivers/gpu/drm/vkms/vkms_composer.c 70 71 /** 72 * @wb_frame_info: The writeback frame buffer metadata 73 * @crtc_state: The crtc state 74 * @crc32: The crc output of the final frame 75 * @output_buffer: A buffer of a row that will receive the result of the blend(s) 76 * @stage_buffer: The line with the pixels from plane being blend to the output 77 * 78 * This function blends the pixels (Using the `pre_mul_alpha_blend`) 79 * from all planes, calculates the crc32 of the output from the former step, 80 * and, if necessary, convert and store the output to the writeback buffer. 81 */ 82 static void blend(struct vkms_device *vkms_dev, 83 struct vkms_writeback_job *wb, 84 struct vkms_crtc_state *crtc_state, 85 u32 *crc32, struct line_buffer *stage_buffer, 86 struct line_buffer *output_buffer, size_t row_size) 87 { 88 struct vkms_plane_state **plane = crtc_state->active_planes; 89 u32 n_active_planes = crtc_state->num_active_planes; 90 91 const struct pixel_argb_u16 background_color = { 92 .a = 0xffff, > 93 .r = (*vkms_dev->config->background_color >> 32) & 0xffff, 94 .g = (*vkms_dev->config->background_color >> 16) & 0xffff, 95 .b = *vkms_dev->config->background_color & 0xffff, 96 }; 97 98 size_t crtc_y_limit = crtc_state->base.crtc->mode.vdisplay; 99 100 for (size_t y = 0; y < crtc_y_limit; y++) { 101 fill_background(&background_color, output_buffer); 102 103 /* The active planes are composed associatively in z-order. */ 104 for (size_t i = 0; i < n_active_planes; i++) { 105 if (!check_y_limit(plane[i]->frame_info, y)) 106 continue; 107 108 plane[i]->plane_read(stage_buffer, plane[i]->frame_info, y); 109 pre_mul_alpha_blend(plane[i]->frame_info, stage_buffer, 110 output_buffer); 111 } 112 113 *crc32 = crc32_le(*crc32, (void *)output_buffer->pixels, row_size); 114 115 if (wb) 116 wb->wb_write(&wb->wb_frame_info, output_buffer, y); 117 } 118 } 119 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
