[011/101] xen-blkfront: fix data size for xenbus_gather in blkfront_connect

[Greg KH]

2.6.33-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Marek Marczykowski <marmarek@xxxxxxxxxxxx>

commit 4352b47ab7918108b389a48d2163c9a4c2aaf139 upstream.

barrier variable is int, not long. This overflow caused another variable
override: "err" (in PV code) and "binfo" (in xenlinux code -
drivers/xen/blkfront/blkfront.c). The later caused incorrect device
flags (RO/removable etc).

Signed-off-by: Marek Marczykowski <marmarek@xxxxxxxxxxxx>
Acked-by: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
[v1: Changed title]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/block/xen-blkfront.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -890,7 +890,7 @@ static void blkfront_connect(struct blkf
 	}
 
 	err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
-			    "feature-barrier", "%lu", &info->feature_barrier,
+			    "feature-barrier", "%d", &info->feature_barrier,
 			    NULL);
 	if (err)
 		info->feature_barrier = 0;


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