From: nimisolo <nimisolo@gmail.com>
Date: Tue, 26 Jul 2016 22:24:56 +0000 (-0700)
Subject: mm/memblock.c:memblock_add_range(): if nr_new is 0 just return
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ef3cc4db415e0cee73ea37ac6d79821d77f15f1d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

mm/memblock.c:memblock_add_range(): if nr_new is 0 just return

If nr_new is 0 which means there's no region would be added, so just
return to the caller.

Signed-off-by: nimisolo <nimisolo@gmail.com>
Cc: Alexander Kuleshov <kuleshovmail@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/memblock.c b/mm/memblock.c
index ac1248933b31..ca099159b45a 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -584,6 +584,9 @@ repeat:
 					       nid, flags);
 	}
 
+	if (!nr_new)
+		return 0;
+
 	/*
 	 * If this was the first round, resize array and repeat for actual
 	 * insertions; otherwise, merge and return.