From 7921a11c7b2929f3ed6fe9081edcf695c60b23c6 Mon Sep 17 00:00:00 2001
From: David Vrabel <david.vrabel@citrix.com>
Date: Thu, 11 Sep 2014 14:20:04 +0100
Subject: [PATCH] xen-scsifront: don't deadlock if the ring becomes full

scsifront_action_handler() will deadlock on host->host_lock, if the
ring is full and it has to wait for entries to become available.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
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