linux-kernel - [PATCH 2/8] Mark powerpc memory resources as busy

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Date:	Wed, 24 Jul 2013 13:36:34 -0500
From:	Nathan Fontenot <nfont@...ux.vnet.ibm.com>
To:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	linuxppc-dev@...ts.ozlabs.org
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	isimatu.yasuaki@...fujitsu.com
Subject: [PATCH 2/8] Mark powerpc memory resources as busy

Memory I/O resources need to be marked as busy or else we cannot remove
them when doing memory hot remove.

Signed-off-by: Nathan Fontenot <nfont@...ux.vnet.ibm.com>
---
 arch/powerpc/mm/mem.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux/arch/powerpc/mm/mem.c
===================================================================
--- linux.orig/arch/powerpc/mm/mem.c
+++ linux/arch/powerpc/mm/mem.c
@@ -523,7 +523,7 @@ static int add_system_ram_resources(void
 			res->name = "System RAM";
 			res->start = base;
 			res->end = base + size - 1;
-			res->flags = IORESOURCE_MEM;
+			res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 			WARN_ON(request_resource(&iomem_resource, res) < 0);
 		}
 	}

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