Hi Jake, [auto build test WARNING on pci/next] [also build test WARNING on v4.4-rc4 next-20151209] url: https://github.com/0day-ci/linux/commits/jakeo-microsoft-com/PCI-hv-New-paravirtual-PCI-front-end-for-Hyper-V-VMs/20151210-070027 base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: x86_64-allmodconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): include/linux/compiler.h:228:8: sparse: attribute 'no_sanitize_address': unknown attribute drivers/pci/host/hv_pcifront.c: In function 'hv_pci_allocate_bridge_windows': >> drivers/pci/host/hv_pcifront.c:1776:18: warning: unused variable 'length' [-Wunused-variable] resource_size_t length; ^ vim +/length +1776 drivers/pci/host/hv_pcifront.c 1760 hbus->high_mmio_res->flags |= IORESOURCE_BUSY; 1761 release_mem_region(hbus->high_mmio_res->start, 1762 resource_size(hbus->high_mmio_res)); 1763 } 1764 } 1765 1766 /** 1767 * hv_pci_allocate_bridge_windows() - Allocate memory regions 1768 * for the bus 1769 * @hbus: Root PCI bus, as understood by this driver 1770 * 1771 * Return: 0 on success, -errno on failure 1772 */ 1773 static int hv_pci_allocate_bridge_windows(struct hv_pcibus_device *hbus) 1774 { 1775 resource_size_t align; > 1776 resource_size_t length; 1777 int ret; 1778 1779 if (hbus->low_mmio_space) { 1780 align = 1ULL << (63 - __builtin_clzll(hbus->low_mmio_space)); 1781 ret = vmbus_allocate_mmio(&hbus->low_mmio_res, hbus->hdev, 0, 1782 0xffffffffULL, 1783 (resource_size_t)hbus->low_mmio_space, 1784 align, false); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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