Hi Hironori, kernel test robot noticed the following build warnings: https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Hironori-KIKUCHI/dt-bindings-display-st7701-Add-Anbernic-RG28XX-panel/20240618-161849 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20240618081515.1215552-3-kikuchan98%40gmail.com patch subject: [PATCH v1 2/3] drm/panel: st7701: Add support for SPI for configuration config: i386-randconfig-141-20240621 (https://download.01.org/0day-ci/archive/20240621/202406210841.Q17G5ISz-lkp@xxxxxxxxx/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 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> | Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> | Closes: https://lore.kernel.org/r/202406210841.Q17G5ISz-lkp@xxxxxxxxx/ smatch warnings: drivers/gpu/drm/panel/panel-sitronix-st7701.c:1076 st7701_dsi_probe() warn: passing zero to 'dev_err_probe' vim +/dev_err_probe +1076 drivers/gpu/drm/panel/panel-sitronix-st7701.c 433b7d46874577 Hironori KIKUCHI 2024-06-18 1062 static int st7701_dsi_probe(struct mipi_dsi_device *dsi) 433b7d46874577 Hironori KIKUCHI 2024-06-18 1063 { 433b7d46874577 Hironori KIKUCHI 2024-06-18 1064 struct st7701 *st7701; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1065 int err; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1066 433b7d46874577 Hironori KIKUCHI 2024-06-18 1067 err = st7701_probe(&dsi->dev, DRM_MODE_CONNECTOR_DSI); 433b7d46874577 Hironori KIKUCHI 2024-06-18 1068 if (err) 433b7d46874577 Hironori KIKUCHI 2024-06-18 1069 return err; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1070 433b7d46874577 Hironori KIKUCHI 2024-06-18 1071 st7701 = dev_get_drvdata(&dsi->dev); 849b2e3ff96982 Jagan Teki 2019-01-25 1072 st7701->dsi = dsi; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1073 st7701->write_command = st7701_dsi_write; 849b2e3ff96982 Jagan Teki 2019-01-25 1074 433b7d46874577 Hironori KIKUCHI 2024-06-18 1075 if (!st7701->desc->lanes) 433b7d46874577 Hironori KIKUCHI 2024-06-18 @1076 return dev_err_probe(&dsi->dev, err, "This panel is not for MIPI DSI\n"); ^^^ -EINVAL? 433b7d46874577 Hironori KIKUCHI 2024-06-18 1077 433b7d46874577 Hironori KIKUCHI 2024-06-18 1078 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | 433b7d46874577 Hironori KIKUCHI 2024-06-18 1079 MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1080 dsi->format = st7701->desc->format; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1081 dsi->lanes = st7701->desc->lanes; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1082 433b7d46874577 Hironori KIKUCHI 2024-06-18 1083 mipi_dsi_set_drvdata(dsi, st7701); 433b7d46874577 Hironori KIKUCHI 2024-06-18 1084 433b7d46874577 Hironori KIKUCHI 2024-06-18 1085 err = mipi_dsi_attach(dsi); 433b7d46874577 Hironori KIKUCHI 2024-06-18 1086 if (err) 433b7d46874577 Hironori KIKUCHI 2024-06-18 1087 return dev_err_probe(&dsi->dev, err, "Failed to init MIPI DSI\n"); c62102165dd792 Marek Vasut 2022-10-15 1088 c62102165dd792 Marek Vasut 2022-10-15 1089 return 0; 433b7d46874577 Hironori KIKUCHI 2024-06-18 1090 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
