From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 20 Feb 2008 05:28:18 +0000 (-0800)
Subject: [LMB]: Fix lmb_add_region if region should be added at the head
X-Git-Tag: v2.6.26-rc1~1125^2~157^2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=74b20dad1c4cc0fd13ceca62fbab808919e1a7ea;p=karo-tx-linux.git

[LMB]: Fix lmb_add_region if region should be added at the head

We introduced a bug in fixing lmb_add_region to handle an initial
region being non-zero.  Before that fix it was impossible to insert a
region at the head of the list since the first region always started
at zero.

Now that its possible for the first region to be non-zero we need to
check to see if the new region should be added at the head and if so
actually add it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/lib/lmb.c b/lib/lmb.c
index e3c8dcb04b46..3c43b95fef4a 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -184,6 +184,11 @@ static long __init lmb_add_region(struct lmb_region *rgn, u64 base, u64 size)
 			break;
 		}
 	}
+
+	if (base < rgn->region[0].base) {
+		rgn->region[0].base = base;
+		rgn->region[0].size = size;
+	}
 	rgn->cnt++;
 
 	return 0;