Hi Jitao, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.1 next-20190517] [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/Jitao-Shi/drm-mediatek-add-dsi-module-reset-driver/20190519-214457 config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/gpu//drm/mediatek/mtk_dsi.c:29:0: drivers/gpu//drm/mediatek/mtk_dsi.c: In function 'mtk_dsi_reset_all': >> drivers/gpu//drm/mediatek/mtk_dsi.c:250:27: warning: large integer implicitly truncated to unsigned type [-Woverflow] MMSYS_SW_RST_DSI_B, ~MMSYS_SW_RST_DSI_B); ^ include/linux/regmap.h:77:42: note: in definition of macro 'regmap_update_bits' regmap_update_bits_base(map, reg, mask, val, NULL, false, false) ^~~ vim +250 drivers/gpu//drm/mediatek/mtk_dsi.c 246 247 static void mtk_dsi_reset_all(struct mtk_dsi *dsi) 248 { 249 regmap_update_bits(dsi->mmsys_sw_rst_b, dsi->sw_rst_b, > 250 MMSYS_SW_RST_DSI_B, ~MMSYS_SW_RST_DSI_B); 251 usleep_range(1000, 1100); 252 253 regmap_update_bits(dsi->mmsys_sw_rst_b, dsi->sw_rst_b, 254 MMSYS_SW_RST_DSI_B, MMSYS_SW_RST_DSI_B); 255 } 256 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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