From e1d0fe3cddf2306e3ac32569aa152f1909c9b46e Mon Sep 17 00:00:00 2001
From: Martin Krause <Martin.Krause@tqs.de>
Date: Tue, 22 Jun 2010 15:00:19 +0200
Subject: [PATCH] mtd: mtdconcat: fix bug with uninitialized lock and unlock
 functions

Test if a lock or unlock function is present (pointer not NULL) before
calling it, to prevent a kernel dump.

Artem: removed extra blank lines

Signed-off-by: Martin Krause <martin.krause@tqs.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Reading git-format-patch failed