powerpc/mm: Mark 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@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 7f4bea16202674bc60a1dbc49d25fd9d0461382e..1cf9c5b67f241f40f46b127024c4a659e95af221 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -514,7 +514,7 @@ 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);
                }
        }