alpha: kernel: Use vma_pages()

Replace explicit computation of vma page count by a call to
vma_pages()

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index 92c0d46..652449e 100644 (file)
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -38,7 +38,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,
        unsigned long nr, start, size;
        int shift = sparse ? 5 : 0;
 
-       nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+       nr = vma_pages(vma);
        start = vma->vm_pgoff;
        size = ((pci_resource_len(pdev, num) - 1) >> (PAGE_SHIFT - shift)) + 1;
 
@@ -255,7 +255,7 @@ static int __legacy_mmap_fits(struct pci_controller *hose,
 {
        unsigned long nr, start, size;
 
-       nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+       nr = vma_pages(vma);
        start = vma->vm_pgoff;
        size = ((res_size - 1) >> PAGE_SHIFT) + 1;