linux-kernel - [PATCH 2/2] drivers/base/node: Use device_create_files() and device_remove

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Date:	Wed, 28 Jan 2015 21:46:14 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] drivers/base/node: Use device_create_files() and device_remove_files()

Use the new helper functions to simplify the code.

Signed-off-by: Takashi Iwai <tiwai@...e.de>
---
 drivers/base/node.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index a3b82e9c7f20..e567e7bde333 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -200,6 +200,16 @@ static ssize_t node_read_distance(struct device *dev,
 }
 static DEVICE_ATTR(distance, S_IRUGO, node_read_distance, NULL);
 
+static const struct device_attribute *node_dev_attrs[] = {
+	&dev_attr_cpumap,
+	&dev_attr_cpulist,
+	&dev_attr_meminfo,
+	&dev_attr_numastat,
+	&dev_attr_distance,
+	&dev_attr_vmstat,
+	NULL
+};
+
 #ifdef CONFIG_HUGETLBFS
 /*
  * hugetlbfs per node attributes registration interface:
@@ -276,12 +286,7 @@ static int register_node(struct node *node, int num, struct node *parent)
 	error = device_register(&node->dev);
 
 	if (!error){
-		device_create_file(&node->dev, &dev_attr_cpumap);
-		device_create_file(&node->dev, &dev_attr_cpulist);
-		device_create_file(&node->dev, &dev_attr_meminfo);
-		device_create_file(&node->dev, &dev_attr_numastat);
-		device_create_file(&node->dev, &dev_attr_distance);
-		device_create_file(&node->dev, &dev_attr_vmstat);
+		device_create_files(&node->dev, node_dev_attrs);
 
 		hugetlb_register_node(node);
 
@@ -299,12 +304,7 @@ static int register_node(struct node *node, int num, struct node *parent)
  */
 void unregister_node(struct node *node)
 {
-	device_remove_file(&node->dev, &dev_attr_cpumap);
-	device_remove_file(&node->dev, &dev_attr_cpulist);
-	device_remove_file(&node->dev, &dev_attr_meminfo);
-	device_remove_file(&node->dev, &dev_attr_numastat);
-	device_remove_file(&node->dev, &dev_attr_distance);
-	device_remove_file(&node->dev, &dev_attr_vmstat);
+	device_remove_files(&node->dev, node_dev_attrs);
 
 	hugetlb_unregister_node(node);		/* no-op, if memoryless node */
 
-- 
2.2.2

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