Hi Shreeya, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on linus/master v5.19-rc6 next-20220715] [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/Shreeya-Patel/Add-LTRF216A-Driver/20220716-210741 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: s390-randconfig-r023-20220717 (https://download.01.org/0day-ci/archive/20220717/202207170630.lcfpHu8v-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 07022e6cf9b5b3baa642be53d0b3c3f1c403dbfd) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/6db354952f0013dd461d2338761ef8ae3399f2d8 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Shreeya-Patel/Add-LTRF216A-Driver/20220716-210741 git checkout 6db354952f0013dd461d2338761ef8ae3399f2d8 # 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=s390 SHELL=/bin/bash drivers/iio/light/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/iio/light/ltrf216a.c:19: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: 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:477:61: 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/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from drivers/iio/light/ltrf216a.c:19: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: 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/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from drivers/iio/light/ltrf216a.c:19: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:13: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: 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:511:59: 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:521:59: 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); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/iio/light/ltrf216a.c:188:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (on) { ^~ drivers/iio/light/ltrf216a.c:199:9: note: uninitialized use occurs here return ret; ^~~ drivers/iio/light/ltrf216a.c:188:2: note: remove the 'if' if its condition is always true if (on) { ^~~~~~~~ drivers/iio/light/ltrf216a.c:186:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 13 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for DRM_DP_AUX_BUS Depends on HAS_IOMEM && DRM && OF Selected by - DRM_MSM && HAS_IOMEM && DRM && (ARCH_QCOM || SOC_IMX5 || COMPILE_TEST && COMMON_CLK && IOMMU_SUPPORT && (QCOM_OCMEM || QCOM_OCMEM && (QCOM_LLCC || QCOM_LLCC && (QCOM_COMMAND_DB || QCOM_COMMAND_DB vim +188 drivers/iio/light/ltrf216a.c 182 183 static int ltrf216a_set_power_state(struct ltrf216a_data *data, bool on) 184 { 185 struct device *dev = &data->client->dev; 186 int ret; 187 > 188 if (on) { 189 ret = pm_runtime_resume_and_get(dev); 190 if (ret) { 191 dev_err(dev, "failed to resume runtime PM: %d\n", ret); 192 return ret; 193 } 194 } else { 195 pm_runtime_mark_last_busy(dev); 196 pm_runtime_put_autosuspend(dev); 197 } 198 199 return ret; 200 } 201 -- 0-DAY CI Kernel Test Service https://01.org/lkp
