From: Wen Congyang <[email protected]>

The memory device has only one node id. Store the node id when
enable the memory device, and we can reuse it when removing the
memory device.

CC: David Rientjes <[email protected]>
CC: Jiang Liu <[email protected]>
CC: Len Brown <[email protected]>
CC: Benjamin Herrenschmidt <[email protected]>
CC: Paul Mackerras <[email protected]>
CC: Christoph Lameter <[email protected]>
Cc: Minchan Kim <[email protected]>
CC: Andrew Morton <[email protected]>
CC: KOSAKI Motohiro <[email protected]>
CC: Yasuaki Ishimatsu <[email protected]>
Signed-off-by: Wen Congyang <[email protected]>
Reviewed-by: Yasuaki Ishimatsu <[email protected]>
---
 drivers/acpi/acpi_memhotplug.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 2a7beac..7873832 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -83,6 +83,7 @@ struct acpi_memory_info {
 struct acpi_memory_device {
        struct acpi_device * device;
        unsigned int state;     /* State of the memory device */
+       int nid;
        struct list_head res_list;
 };
 
@@ -256,6 +257,9 @@ static int acpi_memory_enable_device(struct 
acpi_memory_device *mem_device)
                info->enabled = 1;
                num_enabled++;
        }
+
+       mem_device->nid = node;
+
        if (!num_enabled) {
                printk(KERN_ERR PREFIX "add_memory failed\n");
                mem_device->state = MEMORY_INVALID_STATE;
-- 
1.7.1

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