From 07b8dae38b09bcfede7e726f172e39b5ce8390d9 Mon Sep 17 00:00:00 2001
From: Andy Grover <agrover@redhat.com>
Date: Wed, 14 May 2014 15:48:06 -0700
Subject: [PATCH] target: Don't allow setting WC emulation if device doesn't
 support

Just like for pSCSI, if the transport sets get_write_cache, then it is
not valid to enable write cache emulation for it. Return an error.

see https://bugzilla.redhat.com/show_bug.cgi?id=1082675

Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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