Hi Zijun, kernel test robot noticed the following build warnings: [auto build test WARNING on 0f7ca6f69354e0c3923bbc28c92d0ecab4d50a3e] url: https://github.com/intel-lab-lkp/linux/commits/Zijun-Hu/of-Fix-API-of_find_node_opts_by_path-finding-OF-device-node-failure/20241216-084408 base: 0f7ca6f69354e0c3923bbc28c92d0ecab4d50a3e patch link: https://lore.kernel.org/r/20241216-of_core_fix-v2-6-e69b8f60da63%40quicinc.com patch subject: [PATCH v2 6/7] of: Fix potential wrong MODALIAS uevent value config: x86_64-buildonly-randconfig-001-20241216 (https://download.01.org/0day-ci/archive/20241216/202412161157.HWxjPpzy-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241216/202412161157.HWxjPpzy-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/202412161157.HWxjPpzy-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/linux/irqdomain.h:36, from include/linux/i2c.h:21, from drivers/leds/leds-blinkm.c:11: include/linux/of.h: In function 'of_modalias': >> include/linux/of.h:764:16: warning: returning 'int' from a function with return type 'char *' makes pointer from integer without a cast [-Wint-conversion] 764 | return -ENODEV; | ^ -- In file included from include/linux/irqdomain.h:36, from include/linux/gpio/driver.h:9, from drivers/leds/leds-pca955x.c:44: include/linux/of.h: In function 'of_modalias': >> include/linux/of.h:764:16: warning: returning 'int' from a function with return type 'char *' makes pointer from integer without a cast [-Wint-conversion] 764 | return -ENODEV; | ^ drivers/leds/leds-pca955x.c: In function 'pca955x_probe': drivers/leds/leds-pca955x.c:555:43: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Wformat-truncation=] 555 | "%d", i); | ^~ drivers/leds/leds-pca955x.c:555:42: note: directive argument in the range [-2147483644, 2147483646] 555 | "%d", i); | ^~~~ drivers/leds/leds-pca955x.c:554:33: note: 'snprintf' output between 2 and 12 bytes into a destination of size 8 554 | snprintf(default_label, sizeof(default_label), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 555 | "%d", i); | ~~~~~~~~ -- In file included from drivers/leds/led-core.c:16: include/linux/of.h: In function 'of_modalias': >> include/linux/of.h:764:16: warning: returning 'int' from a function with return type 'char *' makes pointer from integer without a cast [-Wint-conversion] 764 | return -ENODEV; | ^ drivers/leds/led-core.c: In function 'led_compose_name': drivers/leds/led-core.c:551:78: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=] 551 | snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s", | ^ drivers/leds/led-core.c:551:25: note: 'snprintf' output 2 or more bytes (assuming 65) into a destination of size 64 551 | snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 552 | devicename, tmp_buf); | ~~~~~~~~~~~~~~~~~~~~ vim +764 include/linux/of.h bd69f73f2c81eed Grant Likely 2013-02-10 761 f1f6eae8bdfdfce Zijun Hu 2024-12-16 762 static inline char *of_modalias(const struct device_node *np, ssize_t *lenp) bd7a7ed774afd1a Miquel Raynal 2023-04-04 763 { bd7a7ed774afd1a Miquel Raynal 2023-04-04 @764 return -ENODEV; bd7a7ed774afd1a Miquel Raynal 2023-04-04 765 } bd7a7ed774afd1a Miquel Raynal 2023-04-04 766 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
