Merge tag 'renesas-fixes-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel...

[firefly-linux-kernel-4.4.55.git] / drivers / char / mspec.c

diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index e1f60f968fddc8e55b932f4d2ac185835871dfb3..f1d7fa45c2759b0ed97d9a54669d705f2547040c 100644 (file)
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -267,7 +267,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
        if ((vma->vm_flags & VM_WRITE) == 0)
                return -EPERM;
 
-       pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+       pages = vma_pages(vma);
        vdata_size = sizeof(struct vma_data) + pages * sizeof(long);
        if (vdata_size <= PAGE_SIZE)
                vdata = kzalloc(vdata_size, GFP_KERNEL);