Hi Khadija, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on staging/staging-testing] url: https://github.com/intel-lab-lkp/linux/commits/Khadija-Kamran/staging-axis-fifo-initialize-timeouts-in-probe-only/20230316-205814 patch link: https://lore.kernel.org/r/ZBMR4s8xyHGqMm72%40khadija-virtual-machine patch subject: [PATCH v5] staging: axis-fifo: initialize timeouts in probe only config: hexagon-randconfig-r033-20230312 (https://download.01.org/0day-ci/archive/20230317/202303171454.sScrVVOh-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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://github.com/intel-lab-lkp/linux/commit/7e359baa2318b55e12a0c099b75fbd0d799907cf git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Khadija-Kamran/staging-axis-fifo-initialize-timeouts-in-probe-only/20230316-205814 git checkout 7e359baa2318b55e12a0c099b75fbd0d799907cf # 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/staging/axis-fifo/ 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/202303171454.sScrVVOh-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/staging/axis-fifo/axis-fifo.c:25: 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/staging/axis-fifo/axis-fifo.c:25: 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/staging/axis-fifo/axis-fifo.c:25: 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/staging/axis-fifo/axis-fifo.c:958:3: warning: format specifies type 'int' but the argument has type 'long' [-Wformat] read_timeout, write_timeout); ^~~~~~~~~~~~ include/linux/printk.h:528:34: note: expanded from macro 'pr_info' printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:455:60: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:427:19: note: expanded from macro 'printk_index_wrap' _p_func(_fmt, ##__VA_ARGS__); \ ~~~~ ^~~~~~~~~~~ drivers/staging/axis-fifo/axis-fifo.c:958:17: warning: format specifies type 'int' but the argument has type 'long' [-Wformat] read_timeout, write_timeout); ^~~~~~~~~~~~~ include/linux/printk.h:528:34: note: expanded from macro 'pr_info' printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:455:60: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/printk.h:427:19: note: expanded from macro 'printk_index_wrap' _p_func(_fmt, ##__VA_ARGS__); \ ~~~~ ^~~~~~~~~~~ 8 warnings generated. vim +958 drivers/staging/axis-fifo/axis-fifo.c 4a965c5f89decd Jacob Feder 2018-07-22 954 4a965c5f89decd Jacob Feder 2018-07-22 955 static int __init axis_fifo_init(void) 4a965c5f89decd Jacob Feder 2018-07-22 956 { 4a965c5f89decd Jacob Feder 2018-07-22 957 pr_info("axis-fifo driver loaded with parameters read_timeout = %i, write_timeout = %i\n", 4a965c5f89decd Jacob Feder 2018-07-22 @958 read_timeout, write_timeout); 4a965c5f89decd Jacob Feder 2018-07-22 959 return platform_driver_register(&axis_fifo_driver); 4a965c5f89decd Jacob Feder 2018-07-22 960 } 4a965c5f89decd Jacob Feder 2018-07-22 961 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
