[patch 10/10] Fix memory detection.

[Martin Schwidefsky <schwidefsky@de.ibm.com>]

From: Heiko Carstens <heiko.carstens@de.ibm.com>

Before we're getting short on memory detection fixes here is the next
one: if neither sclp nor diag260 report the storage size the detection
loop will return immediately without detecting anything. Fix this by
breaking the detection loop only if the memory end is known.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

 arch/s390/kernel/early.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -urpN linux-2.6/arch/s390/kernel/early.c linux-2.6-patched/arch/s390/kernel/early.c
--- linux-2.6/arch/s390/kernel/early.c	2007-11-16 14:27:30.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/early.c	2007-11-16 14:27:45.000000000 +0100
@@ -200,7 +200,7 @@ static noinline __init void find_memory_
 		cc = __tprot(addr);
 		while (cc == old_cc) {
 			addr += CHUNK_INCR;
-			if (addr >= memsize)
+			if (memsize && addr >= memsize)
 				break;
 #ifndef CONFIG_64BIT
 			if (addr == ADDR2G)

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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