mac802154: remove pib lock

This patch removes the pib lock which is now replaced by rtnl lock. The
new interface already use the rtnl lock only. Nevertheless this patch
will fix issues while using new and old interface at the same time.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 2 insertions, 9 deletions

diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index 2a5878889289..22f478be7489 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -242,7 +242,6 @@ static int mac802154_wpan_open(struct net_device *dev)
         struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
         struct ieee802154_local *local = sdata->local;
         struct wpan_dev *wpan_dev = &sdata->wpan_dev;
-        struct wpan_phy *phy = sdata->local->phy;
 
         rc = ieee802154_check_concurrent_iface(sdata, sdata->vif.type);
         if (rc < 0)
@@ -252,8 +251,6 @@ static int mac802154_wpan_open(struct net_device *dev)
         if (rc < 0)
                 return rc;
 
-        mutex_lock(&phy->pib_lock);
-
         if (local->hw.flags & IEEE802154_HW_PROMISCUOUS) {
                 rc = drv_set_promiscuous_mode(local,
                                               wpan_dev->promiscuous_mode);
@@ -295,11 +292,7 @@ static int mac802154_wpan_open(struct net_device *dev)
                         goto out;
         }
 
-        mutex_unlock(&phy->pib_lock);
-        return 0;
-
 out:
-        mutex_unlock(&phy->pib_lock);
         return rc;
 }
 
diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
index 5cf019a57fd7..033dfc7755c6 100644
--- a/net/mac802154/mib.c
+++ b/net/mac802154/mib.c
@@ -91,16 +91,16 @@ void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan)
         struct ieee802154_local *local = sdata->local;
         int res;
 
+        ASSERT_RTNL();
+
         BUG_ON(dev->type != ARPHRD_IEEE802154);
 
         res = drv_set_channel(local, page, chan);
         if (res) {
                 pr_debug("set_channel failed\n");
         } else {
-                mutex_lock(&local->phy->pib_lock);
                 local->phy->current_channel = chan;
                 local->phy->current_page = page;
-                mutex_unlock(&local->phy->pib_lock);
         }
 }