caif: Fix set-but-unused variables.

The variable 'caifdef' is set but unused in modemcmd().

Similarly for 'net' in receive(), and 'res' in
caif_device_notify() and caif_exit_net().

Just kill them off.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index a518fdd4da0ab5a297d07f33099e702a088a06c1..75e00d59eb49a6930684fd7aa61ba59e3a4e62d1 100644 (file)
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -133,9 +133,7 @@ static int transmit(struct cflayer *layer, struct cfpkt *pkt)
 static int modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
 {
        struct caif_device_entry *caifd;
-       struct caif_dev_common *caifdev;
        caifd = container_of(layr, struct caif_device_entry, layer);
-       caifdev = netdev_priv(caifd->netdev);
        if (ctrl == _CAIF_MODEMCMD_PHYIF_USEFULL) {
                atomic_set(&caifd->in_use, 1);
                wake_up_interruptible(&caifd->event);
@@ -154,10 +152,8 @@ static int modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
 static int receive(struct sk_buff *skb, struct net_device *dev,
                   struct packet_type *pkttype, struct net_device *orig_dev)
 {
-       struct net *net;
        struct cfpkt *pkt;
        struct caif_device_entry *caifd;
-       net = dev_net(dev);
        pkt = cfpkt_fromnative(CAIF_DIR_IN, skb);
        caifd = caif_get(dev);
        if (!caifd || !caifd->layer.up || !caifd->layer.up->receive)
@@ -195,7 +191,6 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
        struct caif_device_entry *caifd = NULL;
        struct caif_dev_common *caifdev;
        enum cfcnfg_phy_preference pref;
-       int res = -EINVAL;
        enum cfcnfg_phy_type phy_type;
 
        if (dev->type != ARPHRD_CAIF)
@@ -210,7 +205,6 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
                caifdev = netdev_priv(dev);
                caifdev->flowctrl = dev_flowctrl;
                atomic_set(&caifd->state, what);
-               res = 0;
                break;
 
        case NETDEV_UP:
@@ -274,7 +268,7 @@ static int caif_device_notify(struct notifier_block *me, unsigned long what,
                                         _CAIF_CTRLCMD_PHYIF_DOWN_IND,
                                         caifd->layer.id);
                might_sleep();
-               res = wait_event_interruptible_timeout(caifd->event,
+               wait_event_interruptible_timeout(caifd->event,
                                        atomic_read(&caifd->in_use) == 0,
                                        TIMEOUT);
                break;
@@ -344,12 +338,11 @@ static int caif_init_net(struct net *net)
 static void caif_exit_net(struct net *net)
 {
        struct net_device *dev;
-       int res;
        rtnl_lock();
        for_each_netdev(net, dev) {
                if (dev->type != ARPHRD_CAIF)
                        continue;
-               res = dev_close(dev);
+               dev_close(dev);
                caif_device_destroy(dev);
        }
        rtnl_unlock();