From 7be5e359a7eaea6ebe761044f6994163f0dd8585 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 27 Dec 2016 14:47:42 +0100 Subject: [PATCH] s390/setup: call memblock_reserve only for size > 0 reserve_initrd currently calls memblock_reserve even if the to be reserved size is zero. Even though the memblock core code can handle this correctly, it still yields confusing debug messages if memblock debugging is enabled. Therefore make sure to not call memblock_reserve with a size of zero. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/setup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 865a48871ca4..1a3388c32a83 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -636,6 +636,8 @@ static void __init reserve_crashkernel(void) static void __init reserve_initrd(void) { #ifdef CONFIG_BLK_DEV_INITRD + if (!INITRD_START || !INITRD_SIZE) + return; initrd_start = INITRD_START; initrd_end = initrd_start + INITRD_SIZE; memblock_reserve(INITRD_START, INITRD_SIZE); -- 2.20.1