From: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
When calling unregister_node(), the function shows following message at
device_release().
Device 'node2' does not have a release() function, it is broken and must be
fixed.
So the patch implements node_device_release()
CC: David Rientjes <rient...@google.com>
CC: Jiang Liu <liu...@gmail.com>
CC: Len Brown <len.br...@intel.com>
CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>
CC: Paul Mackerras <pau...@samba.org>
CC: Christoph Lameter <c...@linux.com>
Cc: Minchan Kim <minchan....@gmail.com>
CC: Andrew Morton <a...@linux-foundation.org>
CC: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
Signed-off-by: Wen Congyang <we...@cn.fujitsu.com>
---
drivers/base/node.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/drivers/base/node.c b/drivers/base/node.c
index af1a177..07523fb 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -252,6 +252,16 @@ static inline void hugetlb_register_node(struct node
*node) {}
static inline void hugetlb_unregister_node(struct node *node) {}
#endif
+static void node_device_release(struct device *dev)
+{
+ struct node *node_dev = to_node(dev);
+
+#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+ flush_work(&node_dev->node_work);
+#endif
+
+ memset(node_dev, 0, sizeof(struct node));
+}
/*
* register_node - Setup a sysfs device for a node.
@@ -265,6 +275,7 @@ int register_node(struct node *node, int num, struct node
*parent)
node->dev.id = num;
node->dev.bus = &node_subsys;
+ node->dev.release = node_device_release;
error = device_register(&node->dev);
if (!error){
--
1.7.1
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