0014-mac802154-remove-unnecessary-spinlocks.patch

From be81648ca1c38cfa31fab40dd3732a34e8a7bac9 Mon Sep 17 00:00:00 2001
From: Tony Cheneau <tony.cheneau@amnesiak.org>
Date: Thu, 20 Sep 2012 23:44:19 -0400
Subject: [PATCH 14/16] mac802154: remove unnecessary spinlocks

These spinlock protects an int variable, that is always accessible in an
atomic fashion.

Signed-off-by: Tony Cheneau <tony.cheneau@amnesiak.org>
---
 net/mac802154/mib.c |   14 ++------------
 1 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
index f47781a..2339f8d 100644
--- a/net/mac802154/mib.c
+++ b/net/mac802154/mib.c
@@ -103,15 +103,10 @@ void mac802154_dev_set_short_addr(struct net_device *dev, u16 val)
 u16 mac802154_dev_get_short_addr(const struct net_device *dev)
 {
 	struct mac802154_sub_if_data *priv = netdev_priv(dev);
-	u16 ret;
 
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
 
-	spin_lock_bh(&priv->mib_lock);
-	ret = priv->short_addr;
-	spin_unlock_bh(&priv->mib_lock);
-
-	return ret;
+	return priv->short_addr;
 }
 
 void mac802154_dev_set_ieee_addr(struct net_device *dev)
@@ -131,15 +126,10 @@ void mac802154_dev_set_ieee_addr(struct net_device *dev)
 u16 mac802154_dev_get_pan_id(const struct net_device *dev)
 {
 	struct mac802154_sub_if_data *priv = netdev_priv(dev);
-	u16 ret;
 
 	BUG_ON(dev->type != ARPHRD_IEEE802154);
 
-	spin_lock_bh(&priv->mib_lock);
-	ret = priv->pan_id;
-	spin_unlock_bh(&priv->mib_lock);
-
-	return ret;
+	return priv->pan_id;
 }
 
 void mac802154_dev_set_pan_id(struct net_device *dev, u16 val)
-- 
1.7.7.6