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-rw-r--r--drivers/uio/uio.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 51fe1795d5a8..10a029b24159 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -587,14 +587,12 @@ static ssize_t uio_write(struct file *filep, const char __user *buf,
static int uio_find_mem_index(struct vm_area_struct *vma)
{
- int mi;
struct uio_device *idev = vma->vm_private_data;
- for (mi = 0; mi < MAX_UIO_MAPS; mi++) {
- if (idev->info->mem[mi].size == 0)
+ if (vma->vm_pgoff < MAX_UIO_MAPS) {
+ if (idev->info->mem[vma->vm_pgoff].size == 0)
return -1;
- if (vma->vm_pgoff == mi)
- return mi;
+ return (int)vma->vm_pgoff;
}
return -1;
}