Hi "Pali, I love your patch! Perhaps something to improve: [auto build test WARNING on helgaas-pci/next] [also build test WARNING on linus/master v5.19 next-20220812] [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/Pali-Roh-r/PCI-mvebu-Fix-endianity-when-accessing-pci-emul-bridge-members/20220812-174306 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: arm-randconfig-s041-20220812 (https://download.01.org/0day-ci/archive/20220813/202208130542.WpzYnXZ3-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/525898e0a8389f8bb560edbce3f07a3ec2550968 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Pali-Roh-r/PCI-mvebu-Fix-endianity-when-accessing-pci-emul-bridge-members/20220812-174306 git checkout 525898e0a8389f8bb560edbce3f07a3ec2550968 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash drivers/pci/controller/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) drivers/pci/controller/pci-mvebu.c:538:25: sparse: sparse: restricted __le16 degrades to integer >> drivers/pci/controller/pci-mvebu.c:538:25: sparse: sparse: cast to restricted __le16 drivers/pci/controller/pci-mvebu.c:541:26: sparse: sparse: restricted __le16 degrades to integer drivers/pci/controller/pci-mvebu.c:541:26: sparse: sparse: cast to restricted __le16 vim +538 drivers/pci/controller/pci-mvebu.c 518 519 static int mvebu_pcie_handle_iobase_change(struct mvebu_pcie_port *port) 520 { 521 struct mvebu_pcie_window desired = {}; 522 struct pci_bridge_emul_conf *conf = &port->bridge.conf; 523 524 /* Are the new iobase/iolimit values invalid? */ 525 if (conf->iolimit < conf->iobase || 526 le16_to_cpu(conf->iolimitupper) < le16_to_cpu(conf->iobaseupper)) 527 return mvebu_pcie_set_window(port, port->io_target, port->io_attr, 528 &desired, &port->iowin); 529 530 /* 531 * We read the PCI-to-PCI bridge emulated registers, and 532 * calculate the base address and size of the address decoding 533 * window to setup, according to the PCI-to-PCI bridge 534 * specifications. iobase is the bus address, port->iowin_base 535 * is the CPU address. 536 */ 537 desired.remap = ((conf->iobase & 0xF0) << 8) | > 538 le16_to_cpu(conf->iobaseupper << 16); 539 desired.base = port->pcie->io.start + desired.remap; 540 desired.size = ((0xFFF | ((conf->iolimit & 0xF0) << 8) | 541 le16_to_cpu(conf->iolimitupper << 16)) - 542 desired.remap) + 543 1; 544 545 return mvebu_pcie_set_window(port, port->io_target, port->io_attr, &desired, 546 &port->iowin); 547 } 548 -- 0-DAY CI Kernel Test Service https://01.org/lkp
