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Commit 64b00175 authored by Libin's avatar Libin Committed by Bjorn Helgaas
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PCI: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 



(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as an inline funcion vma_pages() in linux/mm.h, so use it.

Signed-off-by: default avatarLibin <huawei.libin@huawei.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 545d7b78

drivers/pci/pci-sysfs.c

+1 −1
Original line number Diff line number Diff line
@@ -897,7 +897,7 @@ int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, 


	if (pci_resource_len(pdev, resno) == 0)

		return 0;

	nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;

	nr = vma_pages(vma);

	start = vma->vm_pgoff;

	size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1;

	pci_start = (mmap_api == PCI_MMAP_PROCFS) ?