Hi Abel, I love your patch! Perhaps something to improve: [auto build test WARNING on next-20221116] [cannot apply to robh/for-next linus/master v6.1-rc5 v6.1-rc4 v6.1-rc3 v6.1-rc5] [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/Abel-Vesa/phy-qualcomm-Add-support-for-SM8550/20221116-200911 patch link: https://lore.kernel.org/r/20221116120157.2706810-4-abel.vesa%40linaro.org patch subject: [PATCH 03/10] phy: qcom-qmp-ufs: Add SM8550 support config: hexagon-randconfig-r033-20221117 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project bbe6bd724a6335e497c7edaed191d37a828d0390) 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/c04d61d614f07f34f61ca0bd3d7343a57d01c356 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Abel-Vesa/phy-qualcomm-Add-support-for-SM8550/20221116-200911 git checkout c04d61d614f07f34f61ca0bd3d7343a57d01c356 # 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 SHELL=/bin/bash drivers/phy/qualcomm/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from drivers/phy/qualcomm/phy-qcom-qmp-ufs.c:10: 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/phy/qualcomm/phy-qcom-qmp-ufs.c:10: 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/phy/qualcomm/phy-qcom-qmp-ufs.c:10: 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/phy/qualcomm/phy-qcom-qmp-ufs.c:553:38: warning: unused variable 'sm8550_ufsphy_hs_b_serdes' [-Wunused-const-variable] static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = { ^ 7 warnings generated. vim +/sm8550_ufsphy_hs_b_serdes +553 drivers/phy/qualcomm/phy-qcom-qmp-ufs.c 552 > 553 static const struct qmp_phy_init_tbl sm8550_ufsphy_hs_b_serdes[] = { 554 QMP_PHY_INIT_CFG(QSERDES_V3_COM_VCO_TUNE_MAP, 0x44), 555 }; 556 -- 0-DAY CI Kernel Test Service https://01.org/lkp