From a1e1774c6dfa3a524dd8df51ca95185fe5ef3247 Mon Sep 17 00:00:00 2001
From: Martin Svec <martin.svec@zoner.cz>
Date: Tue, 1 Apr 2014 16:03:02 +0200
Subject: [PATCH] Target/sbc: Initialize COMPARE_AND_WRITE write_sg scatterlist

When compiled with CONFIG_DEBUG_SG set, uninitialized SGL leads
to BUG() in compare_and_write_callback().

Signed-off-by: Martin Svec <martin.svec@zoner.cz>
Cc: <stable@vger.kernel.org> #3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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