From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Tue, 12 Mar 2013 22:08:26 +0000 (-0700)
Subject: Revert "xen/blkback: Don't trust the handle from the frontend."
X-Git-Tag: v3.8.3~4
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=32f4d10ed8fd7ef4cebbf02c5326e8bb6aeca9b1;p=karo-tx-linux.git

Revert "xen/blkback: Don't trust the handle from the frontend."

This reverts commit 01c681d4c70d64cb72142a2823f27c4146a02e63 upstream
(ef56ca64ea733c3b88f0bb74b04da128b1dc35d8 in this tree), as it wasn't
supposed to have been applied to the stable tree.

Cc: Jan Beulich <jbeulich@suse.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index de1f319f7bd7..e34a7b450e3d 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -881,6 +881,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
 		goto fail_response;
 	}
 
+	preq.dev           = req->u.rw.handle;
 	preq.sector_number = req->u.rw.sector_number;
 	preq.nr_sects      = 0;