Hi Uma, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on drm/drm-next next-20240213] [cannot apply to drm-intel/for-linux-next drm-intel/for-linux-next-fixes linus/master v6.8-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/Uma-Shankar/drm-color-pipeline-base-work/20240213-144544 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20240213064835.139464-2-uma.shankar%40intel.com patch subject: [PATCH 01/28] [NOT FOR REVIEW] drm: color pipeline base work config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240214/202402141056.LzCSLaOT-lkp@xxxxxxxxx/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240214/202402141056.LzCSLaOT-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402141056.LzCSLaOT-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/tests/drm_fixp_test.c:11:59: warning: overflow in expression; result is 9223372036854775807 with type 'long long' [-Winteger-overflow] 11 | KUNIT_EXPECT_EQ(test, 0x7fffffffffffffffll, ((1LL << 63) - 1)); | ^ 1 warning generated. -- >> drivers/gpu/drm/vkms/vkms_composer.c:95:5: warning: no previous prototype for function 'lerp_u16' [-Wmissing-prototypes] 95 | u16 lerp_u16(u16 a, u16 b, s64 t) | ^ drivers/gpu/drm/vkms/vkms_composer.c:95:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 95 | u16 lerp_u16(u16 a, u16 b, s64 t) | ^ | static >> drivers/gpu/drm/vkms/vkms_composer.c:105:5: warning: no previous prototype for function 'get_lut_index' [-Wmissing-prototypes] 105 | s64 get_lut_index(const struct vkms_color_lut *lut, u16 channel_value) | ^ drivers/gpu/drm/vkms/vkms_composer.c:105:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 105 | s64 get_lut_index(const struct vkms_color_lut *lut, u16 channel_value) | ^ | static >> drivers/gpu/drm/vkms/vkms_composer.c:167:6: warning: no previous prototype for function 'apply_3x4_matrix' [-Wmissing-prototypes] 167 | void apply_3x4_matrix(struct pixel_argb_s32 *pixel, const struct drm_color_ctm_3x4 *matrix) | ^ drivers/gpu/drm/vkms/vkms_composer.c:167:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 167 | void apply_3x4_matrix(struct pixel_argb_s32 *pixel, const struct drm_color_ctm_3x4 *matrix) | ^ | static 3 warnings generated. -- >> drivers/gpu/drm/vkms/vkms_colorop.c:11:1: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers] 11 | const int vkms_initialize_tf_pipeline(struct drm_plane *plane, struct drm_prop_enum_list *list) | ^~~~~ >> drivers/gpu/drm/vkms/vkms_colorop.c:11:11: warning: no previous prototype for function 'vkms_initialize_tf_pipeline' [-Wmissing-prototypes] 11 | const int vkms_initialize_tf_pipeline(struct drm_plane *plane, struct drm_prop_enum_list *list) | ^ drivers/gpu/drm/vkms/vkms_colorop.c:11:7: note: declare 'static' if the function is not intended to be used outside of this translation unit 11 | const int vkms_initialize_tf_pipeline(struct drm_plane *plane, struct drm_prop_enum_list *list) | ^ | static >> drivers/gpu/drm/vkms/vkms_colorop.c:80:5: warning: no previous prototype for function 'vkms_initialize_colorops' [-Wmissing-prototypes] 80 | int vkms_initialize_colorops(struct drm_plane *plane) | ^ drivers/gpu/drm/vkms/vkms_colorop.c:80:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 80 | int vkms_initialize_colorops(struct drm_plane *plane) | ^ | static 3 warnings generated. vim +11 drivers/gpu/drm/tests/drm_fixp_test.c 8 9 static void drm_test_sm2fixp(struct kunit *test) 10 { > 11 KUNIT_EXPECT_EQ(test, 0x7fffffffffffffffll, ((1LL << 63) - 1)); 12 13 /* 1 */ 14 KUNIT_EXPECT_EQ(test, drm_int2fixp(1), drm_sm2fixp(1ull << DRM_FIXED_POINT)); 15 16 /* -1 */ 17 KUNIT_EXPECT_EQ(test, drm_int2fixp(-1), drm_sm2fixp((1ull << 63) | (1ull << DRM_FIXED_POINT))); 18 19 /* 0.5 */ 20 KUNIT_EXPECT_EQ(test, drm_fixp_from_fraction(1, 2), drm_sm2fixp(1ull << (DRM_FIXED_POINT - 1))); 21 22 /* -0.5 */ 23 KUNIT_EXPECT_EQ(test, drm_fixp_from_fraction(-1, 2), drm_sm2fixp((1ull << 63) | (1ull << (DRM_FIXED_POINT - 1)))); 24 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
