tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: b7455b10da762f2d447678c88e37cc1eb6cb45ee commit: db728ea9c7be137b4f4361295f11e0b56b6286ac [13283/14037] drivers: watchdog: Add StarFive Watchdog driver config: hexagon-randconfig-r035-20230426 (https://download.01.org/0day-ci/archive/20230427/202304270438.mwnBZp1A-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=db728ea9c7be137b4f4361295f11e0b56b6286ac git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout db728ea9c7be137b4f4361295f11e0b56b6286ac # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/watchdog/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304270438.mwnBZp1A-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/watchdog/starfive-wdt.c:9: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from drivers/watchdog/starfive-wdt.c:9: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from drivers/watchdog/starfive-wdt.c:9: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ >> drivers/watchdog/starfive-wdt.c:584:34: warning: unused variable 'starfive_wdt_match' [-Wunused-const-variable] static const struct of_device_id starfive_wdt_match[] = { ^ 7 warnings generated. vim +/starfive_wdt_match +584 drivers/watchdog/starfive-wdt.c 583 > 584 static const struct of_device_id starfive_wdt_match[] = { 585 { .compatible = "starfive,jh7100-wdt", .data = &starfive_wdt_jh7100_variant }, 586 { .compatible = "starfive,jh7110-wdt", .data = &starfive_wdt_jh7110_variant }, 587 { /* sentinel */ } 588 }; 589 MODULE_DEVICE_TABLE(of, starfive_wdt_match); 590 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
