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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-17 16:07:08 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-06-17 16:07:08 -0700
commitb29f680c4fe305902d02c1d5aa4968fe13a45fe6 (patch)
treeeefd18ce2a5efaa9f144cfbdf336bfbf3cbaf5cf
parent7171511eaec5bf23fb06078f59784a3a0626b38f (diff)
Revert "uio: fix vma io range check in mmap"
This reverts commit ddb09754e6c7239e302c7b675df9bbd415f8de5d. Linus objected to this originally, I can see why it might be needed, but given that no one spoke up defending this patch, I'm going to revert it. If you have hardware that requires this change, please speak up in the future and defend the patch. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Bin Wang <binw@marvell.com> Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Cc: Norbert Ciosek <norbertciosek@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/uio/uio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index e371f5af11f5..a673e5b6a2e0 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -655,7 +655,7 @@ static int uio_mmap_physical(struct vm_area_struct *vma)
if (mem->addr & ~PAGE_MASK)
return -ENODEV;
- if (vma->vm_end - vma->vm_start > PAGE_ALIGN(mem->size))
+ if (vma->vm_end - vma->vm_start > mem->size)
return -EINVAL;
vma->vm_ops = &uio_physical_vm_ops;