Hi Jayshri, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on spi/for-next] [also build test WARNING on v5.10-rc7 next-20201209] [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] url: https://github.com/0day-ci/linux/commits/Jayshri-Pawar/Driver-for-Cadence-xSPI-flash-controller/20201209-160406 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next config: arm-randconfig-r006-20201210 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/5b258ff21564ca007e3b54d865c3cfb9851ed00a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jayshri-Pawar/Driver-for-Cadence-xSPI-flash-controller/20201209-160406 git checkout 5b258ff21564ca007e3b54d865c3cfb9851ed00a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from include/linux/io.h:13, from drivers/spi/spi-cadence-xspi.c:15: drivers/spi/spi-cadence-xspi.c: In function 'cdns_xspi_send_stig_command': >> arch/arm/include/asm/io.h:95:2: warning: '*((void *)&cmd_regs+20)' is used uninitialized in this function [-Wuninitialized] 95 | asm volatile("str %1, %0" | ^~~ drivers/spi/spi-cadence-xspi.c:521:6: note: '*((void *)&cmd_regs+20)' was declared here 521 | u32 cmd_regs[5] = {0}; | ^~~~~~~~ vim +95 arch/arm/include/asm/io.h 195bbcac2e5c12f Will Deacon 2012-08-24 91 84c4d3a6d438f59 Thierry Reding 2014-07-28 92 #define __raw_writel __raw_writel 195bbcac2e5c12f Will Deacon 2012-08-24 93 static inline void __raw_writel(u32 val, volatile void __iomem *addr) 195bbcac2e5c12f Will Deacon 2012-08-24 94 { 195bbcac2e5c12f Will Deacon 2012-08-24 @95 asm volatile("str %1, %0" 5bb5d66d89041b7 Peter Hurley 2015-04-13 96 : : "Qo" (*(volatile u32 __force *)addr), "r" (val)); 195bbcac2e5c12f Will Deacon 2012-08-24 97 } 195bbcac2e5c12f Will Deacon 2012-08-24 98 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org