From: Baoquan He <bhe@redhat.com>
Date: Mon, 13 Oct 2014 22:53:42 +0000 (-0700)
Subject: kexec: check if crashk_res_low exists when exclude it from crash mem ranges
X-Git-Tag: fixes-against-v3.18-rc2~79^2~58
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a2d6aa8fa0750fe1d2fc9673d4a46b2fd87e44b3;p=pandora-kernel.git

kexec: check if crashk_res_low exists when exclude it from crash mem ranges

Add a check if crashk_res_low exists just like GART region does.  If
crashk_res_low doesn't exist, calling exclude_mem_range is unnecessary.

Meanwhile, since crashk_res_low has been initialized at definition, it's
safe just use "if (crashk_low_res.end)" to check if it's exist.  And this
can make it consistent with other places of check.

Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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