From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 6 Feb 2012 09:20:45 +0000 (+0100)
Subject: cdrom: use copy_to_user() without the underscores
X-Git-Tag: v3.2.9~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c1dd346c39c2a7d3ca7b9670e9504ae19d4e927a;p=pandora-kernel.git

cdrom: use copy_to_user() without the underscores

commit 822bfa51ce44f2c63c300fdb76dc99c4d5a5ca9f upstream.

"nframes" comes from the user and "nframes * CD_FRAMESIZE_RAW" can wrap
on 32 bit systems.  That would have been ok if we used the same wrapped
value for the copy, but we use a shifted value.  We should just use the
checked version of copy_to_user() because it's not going to make a
difference to the speed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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