Hi Abhishek, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on awilliam-vfio/next] [also build test WARNING on v5.17-rc1 next-20220124] [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/Abhishek-Sahu/vfio-pci-Enable-ru... base: https://github.com/awilliam/linux-vfio.git next config: x86_64-randconfig-s022-20220124 (https://download.01.org/0day-ci/archive/20220125/202201251024.DoqLcJkP-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/84afeb78e3ae55e0f1c1f84d42e28c605... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Abhishek-Sahu/vfio-pci-Enable-runtime-power-management-support/20220125-021827 git checkout 84afeb78e3ae55e0f1c1f84d42e28c60585fdc48 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/vfio/pci/ mm/kasan/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/vfio/pci/vfio_pci_rdwr.c:65:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:65:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:66:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:66:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:95:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:95:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:96:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:96:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:97:1: sparse: sparse: restricted pci_power_t degrades to integer drivers/vfio/pci/vfio_pci_rdwr.c:97:1: sparse: sparse: restricted pci_power_t degrades to integer vim +64 drivers/vfio/pci/vfio_pci_rdwr.c bc93b9ae0151ae Alex Williamson 2020-08-17 63 bc93b9ae0151ae Alex Williamson 2020-08-17 @64 VFIO_IOWRITE(8) bc93b9ae0151ae Alex Williamson 2020-08-17 65 VFIO_IOWRITE(16) bc93b9ae0151ae Alex Williamson 2020-08-17 66 VFIO_IOWRITE(32) bc93b9ae0151ae Alex Williamson 2020-08-17 67 #ifdef iowrite64 bc93b9ae0151ae Alex Williamson 2020-08-17 68 VFIO_IOWRITE(64) bc93b9ae0151ae Alex Williamson 2020-08-17 69 #endif bc93b9ae0151ae Alex Williamson 2020-08-17 70 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org