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i915: return -EFAULT if copy_to_user fails
authorDan Carpenter <error27@gmail.com>
Sat, 19 Jun 2010 13:12:51 +0000 (15:12 +0200)
committerChris Wilson <chris@chris-wilson.co.uk>
Mon, 6 Sep 2010 22:09:53 +0000 (23:09 +0100)
copy_to_user returns the number of bytes remaining to be copied, but we
want to return a negative error code here.  These are returned to
userspace.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org

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