netdevice ppp: Convert directly reference of netdev->priv

1. Use netdev_priv(dev) to replace dev->priv.
2. Alloc netdev's private data by alloc_netdev().

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 10 deletions

diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index c1e57c093e08..bad99e8cac33 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -886,7 +886,7 @@ out_chrdev:
 static int
 ppp_start_xmit(struct sk_buff *skb, struct net_device *dev)
 {
-        struct ppp *ppp = (struct ppp *) dev->priv;
+        struct ppp *ppp = netdev_priv(dev);
         int npi, proto;
         unsigned char *pp;
 
@@ -931,7 +931,7 @@ ppp_start_xmit(struct sk_buff *skb, struct net_device *dev)
 static int
 ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 {
-        struct ppp *ppp = dev->priv;
+        struct ppp *ppp = netdev_priv(dev);
         int err = -EFAULT;
         void __user *addr = (void __user *) ifr->ifr_ifru.ifru_data;
         struct ppp_stats stats;
@@ -2418,13 +2418,12 @@ ppp_create_interface(int unit, int *retp)
         int ret = -ENOMEM;
         int i;
 
-        ppp = kzalloc(sizeof(struct ppp), GFP_KERNEL);
-        if (!ppp)
-                goto out;
-        dev = alloc_netdev(0, "", ppp_setup);
+        dev = alloc_netdev(sizeof(struct ppp), "", ppp_setup);
         if (!dev)
                 goto out1;
 
+        ppp = netdev_priv(dev);
+        ppp->dev = dev;
         ppp->mru = PPP_MRU;
         init_ppp_file(&ppp->file, INTERFACE);
         ppp->file.hdrlen = PPP_HDRLEN - 2;      /* don't count proto bytes */
@@ -2437,8 +2436,6 @@ ppp_create_interface(int unit, int *retp)
         ppp->minseq = -1;
         skb_queue_head_init(&ppp->mrq);
 #endif /* CONFIG_PPP_MULTILINK */
-        ppp->dev = dev;
-        dev->priv = ppp;
 
         dev->hard_start_xmit = ppp_start_xmit;
 
@@ -2476,8 +2473,6 @@ out2:
         mutex_unlock(&all_ppp_mutex);
         free_netdev(dev);
 out1:
-        kfree(ppp);
-out:
         *retp = ret;
         return NULL;
 }