tree: git://git.armlinux.org.uk/~rmk/linux-arm.git clearfog head: 60358028cb7ae864f9ea84eac86804c92f623951 commit: ba8248ab8ce8c1c3e68d176e608490205d0ee5d0 [9/10] mvebu/clearfog pcie updates reproduce: # apt-get install sparse # sparse version: v0.6.1-174-g094d5a94-dirty git checkout ba8248ab8ce8c1c3e68d176e608490205d0ee5d0 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/pci/pci-bridge-emul.c:278:33: sparse: expected restricted __le16 [usertype] bridgectrl drivers/pci/pci-bridge-emul.c:278:33: sparse: got int vim +278 drivers/pci/pci-bridge-emul.c 263 264 /* 265 * Initialize a pci_bridge_emul structure to represent a fake PCI 266 * bridge configuration space. The caller needs to have initialized 267 * the PCI configuration space with whatever values make sense 268 * (typically at least vendor, device, revision), the ->ops pointer, 269 * and optionally ->data and ->has_pcie. 270 */ 271 int pci_bridge_emul_init(struct pci_bridge_emul *bridge, 272 unsigned int flags) 273 { 274 bridge->conf.class_revision |= cpu_to_le32(PCI_CLASS_BRIDGE_PCI << 16); 275 bridge->conf.header_type = PCI_HEADER_TYPE_BRIDGE; 276 bridge->conf.cache_line_size = 0x10; 277 bridge->conf.status = cpu_to_le16(PCI_STATUS_CAP_LIST); 279 bridge->pci_regs_behavior = kmemdup(pci_regs_behavior, 280 sizeof(pci_regs_behavior), 281 GFP_KERNEL); 282 if (!bridge->pci_regs_behavior) 283 return -ENOMEM; 284 285 if (bridge->has_pcie) { 286 bridge->conf.capabilities_pointer = PCI_CAP_PCIE_START; 287 bridge->pcie_conf.cap_id = PCI_CAP_ID_EXP; 288 /* Set PCIe v2, root port, slot support */ 289 bridge->pcie_conf.cap = 290 cpu_to_le16(PCI_EXP_TYPE_ROOT_PORT << 4 | 2 | 291 PCI_EXP_FLAGS_SLOT); 292 bridge->pcie_cap_regs_behavior = 293 kmemdup(pcie_cap_regs_behavior, 294 sizeof(pcie_cap_regs_behavior), 295 GFP_KERNEL); 296 if (!bridge->pcie_cap_regs_behavior) { 297 kfree(bridge->pci_regs_behavior); 298 return -ENOMEM; 299 } 300 } 301 302 if (flags & PCI_BRIDGE_EMUL_NO_PREFETCHABLE_BAR) { 303 bridge->pci_regs_behavior[PCI_PREF_MEMORY_BASE / 4].ro = ~0; 304 bridge->pci_regs_behavior[PCI_PREF_MEMORY_BASE / 4].rw = 0; 305 } 306 307 return 0; 308 } 309 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org