diff options
| -rw-r--r-- | drivers/uio/uio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 68a49655778..03efb065455 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -708,7 +708,8 @@ static int uio_mmap(struct file *filep, struct vm_area_struct *vma) return -EINVAL; requested_pages = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; - actual_pages = (idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT; + actual_pages = ((idev->info->mem[mi].addr & ~PAGE_MASK) + + idev->info->mem[mi].size + PAGE_SIZE -1) >> PAGE_SHIFT; if (requested_pages > actual_pages) return -EINVAL; |