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netpoll: remove return value from netpoll_rx_disable()

PATCH Applied Ding Tianhong 2 participants 2 messages May 28, 2013

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Networking Network drivers
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Ding Tianhong

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#0 lore raw

PATCH 1/1 netpoll: remove return value from netpoll_rx_disable()

The netpoll_rx_disable() will always return 0, it is no use and looks wordy, so remove the unnecessary code and get rid of it in _dev_open and _dev_close.

Signed-off-by Ding Tianhong <[email protected]>
---
 include/linux/netpoll.h |  4 ++--
 net/core/dev.c          | 15 ++++-----------
 net/core/netpoll.c      |  3 +--
 3 files changed, 7 insertions(+), 15 deletions(-)
include/linux/netpoll.h +2 -2
index fa2cb76..f3c7c24 100644
@@ -53,10 +53,10 @@ struct netpoll_info {
 };
 
 #ifdef CONFIG_NETPOLL
-extern int netpoll_rx_disable(struct net_device *dev);
+extern void netpoll_rx_disable(struct net_device *dev);
 extern void netpoll_rx_enable(struct net_device *dev);
 #else
-static inline int netpoll_rx_disable(struct net_device *dev) { return 0; }
+static inline void netpoll_rx_disable(struct net_device *dev) { return; }
 static inline void netpoll_rx_enable(struct net_device *dev) { return; }
 #endif
net/core/dev.c +4 -11
index fc1e289..20300d4 100644
@@ -1198,9 +1198,7 @@ static int __dev_open(struct net_device *dev)
 	 * If we don't do this there is a chance ndo_poll_controller
 	 * or ndo_poll may be running while we open the device
 	 */
-	ret = netpoll_rx_disable(dev);
-	if (ret)
-		return ret;
+	netpoll_rx_disable(dev);
 
 	ret = call_netdevice_notifiers(NETDEV_PRE_UP, dev);
 	ret = notifier_to_errno(ret);

@@ -1309,9 +1307,7 @@ static int __dev_close(struct net_device *dev)
 	LIST_HEAD(single);
 
 	/* Temporarily disable netpoll until the interface is down */
-	retval = netpoll_rx_disable(dev);
-	if (retval)
-		return retval;
+	netpoll_rx_disable(dev);
 
 	list_add(&dev->unreg_list, &single);
 	retval = __dev_close_many(&single);

@@ -1353,14 +1349,11 @@ static int dev_close_many(struct list_head *head)
  */
 int dev_close(struct net_device *dev)
 {
-	int ret = 0;
 	if (dev->flags & IFF_UP) {
 		LIST_HEAD(single);
 
 		/* Block netpoll rx while the interface is going down */
-		ret = netpoll_rx_disable(dev);
-		if (ret)
-			return ret;
+		netpoll_rx_disable(dev);
 
 		list_add(&dev->unreg_list, &single);
 		dev_close_many(&single);

@@ -1368,7 +1361,7 @@ int dev_close(struct net_device *dev)
 
 		netpoll_rx_enable(dev);
 	}
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL(dev_close);
net/core/netpoll.c +1 -2
index cec074b..37deedd 100644
@@ -247,7 +247,7 @@ static void netpoll_poll_dev(struct net_device *dev)
 	zap_completion_queue();
 }
 
-int netpoll_rx_disable(struct net_device *dev)
+void netpoll_rx_disable(struct net_device *dev)
 {
 	struct netpoll_info *ni;
 	int idx;

@@ -257,7 +257,6 @@ int netpoll_rx_disable(struct net_device *dev)
 	if (ni)
 		down(&ni->dev_lock);
 	srcu_read_unlock(&netpoll_srcu, idx);
-	return 0;
 }
 EXPORT_SYMBOL(netpoll_rx_disable);
Signature · 1 line
1.8.0
maintainer Applied
#1 lore raw

From: Ding Tianhong <[email protected]>
Date: Tue, 28 May 2013 13:53:31 +0800

Quoted 4 lines

The netpoll_rx_disable() will always return 0, it is no use and looks wordy, so remove the unnecessary code and get rid of it in _dev_open and _dev_close.

Signed-off-by Ding Tianhong <[email protected]>

Applied, thanks.