From: NeilBrown <neilb@suse.de>
Date: Fri, 12 Jun 2015 09:46:44 +0000 (+1000)
Subject: md: don't return 0 from array_state_store
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~207^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c008f1d356277a5b7561040596a073d87e56b0c8;p=pandora-kernel.git

md: don't return 0 from array_state_store

Returning zero from a 'store' function is bad.
The return value should be either len length of the string
or an error.

So use 'len' if 'err' is zero.

Fixes: 6791875e2e53 ("md: make reconfig_mutex optional for writes to md sysfs files.")
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@vger.kernel (v4.0+)
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