Hi Nilesh, kernel test robot noticed the following build errors:
[auto build test ERROR on f50b969bafafb2810a07f376387350c4c0d72a21] url: https://github.com/intel-lab-lkp/linux/commits/Nilesh-Laad/dt-bindings-bridge-lt9211c-Add-bindings/20251107-210546 base: f50b969bafafb2810a07f376387350c4c0d72a21 patch link: https://lore.kernel.org/r/20251107-add-lt9211c-bridge-v2-2-b0616e23407c%40oss.qualcomm.com patch subject: [PATCH v2 2/2] drm/bridge: add support for lontium lt9211c bridge config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20251108/[email protected]/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251108/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All error/warnings (new ones prefixed by >>): >> drivers/gpu/drm/bridge/lontium-lt9211c.c:207:48: warning: '&' within '|' >> [-Wbitwise-op-parentheses] 207 | ret = regmap_write(ctx->regmap, 0x8180, (pval & 0xfc | 0x03)); | ~~~~~^~~~~~ ~ drivers/gpu/drm/bridge/lontium-lt9211c.c:207:48: note: place parentheses around the '&' expression to silence this warning 207 | ret = regmap_write(ctx->regmap, 0x8180, (pval & 0xfc | 0x03)); | ^ | ( ) drivers/gpu/drm/bridge/lontium-lt9211c.c:227:48: warning: '&' within '|' [-Wbitwise-op-parentheses] 227 | ret = regmap_write(ctx->regmap, 0x8530, (pval & 0xf8 | 0x11)); | ~~~~~^~~~~~ ~ drivers/gpu/drm/bridge/lontium-lt9211c.c:227:48: note: place parentheses around the '&' expression to silence this warning 227 | ret = regmap_write(ctx->regmap, 0x8530, (pval & 0xf8 | 0x11)); | ^ | ( ) drivers/gpu/drm/bridge/lontium-lt9211c.c:253:5: warning: unused variable 'bc' [-Wunused-variable] 253 | u8 bc[3]; | ^~ drivers/gpu/drm/bridge/lontium-lt9211c.c:619:48: warning: '&' within '|' [-Wbitwise-op-parentheses] 619 | ret = regmap_write(ctx->regmap, 0x8530, (pval & 0x3f | 0x40)); | ~~~~~^~~~~~ ~ drivers/gpu/drm/bridge/lontium-lt9211c.c:619:48: note: place parentheses around the '&' expression to silence this warning 619 | ret = regmap_write(ctx->regmap, 0x8530, (pval & 0x3f | 0x40)); | ^ | ( ) >> drivers/gpu/drm/bridge/lontium-lt9211c.c:918:14: error: incompatible >> function pointer types initializing 'int (*)(struct drm_bridge *, struct >> drm_encoder *, enum drm_bridge_attach_flags)' with an expression of type >> 'int (struct drm_bridge *, enum drm_bridge_attach_flags)' >> [-Wincompatible-function-pointer-types] 918 | .attach = lt9211c_attach, | ^~~~~~~~~~~~~~ >> drivers/gpu/drm/bridge/lontium-lt9211c.c:920:20: error: incompatible >> function pointer types initializing 'void (*)(struct drm_bridge *, struct >> drm_atomic_state *)' with an expression of type 'void (struct drm_bridge *, >> struct drm_bridge_state *)' [-Wincompatible-function-pointer-types] 920 | .atomic_enable = lt9211c_atomic_enable, | ^~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/bridge/lontium-lt9211c.c:921:21: error: incompatible function pointer types initializing 'void (*)(struct drm_bridge *, struct drm_atomic_state *)' with an expression of type 'void (struct drm_bridge *, struct drm_bridge_state *)' [-Wincompatible-function-pointer-types] 921 | .atomic_disable = lt9211c_atomic_disable, | ^~~~~~~~~~~~~~~~~~~~~~ 4 warnings and 3 errors generated. vim +918 drivers/gpu/drm/bridge/lontium-lt9211c.c 916 917 static const struct drm_bridge_funcs lt9211c_funcs = { > 918 .attach = lt9211c_attach, 919 .mode_valid = lt9211c_mode_valid, > 920 .atomic_enable = lt9211c_atomic_enable, 921 .atomic_disable = lt9211c_atomic_disable, 922 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 923 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 924 .atomic_get_input_bus_fmts = lt9211c_atomic_get_input_bus_fmts, 925 .atomic_reset = drm_atomic_helper_bridge_reset, 926 }; 927 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
