net: pppoe - stop using proc internals

Alexey Dobriyan pointed that using PDE_NET outside the
proc code is plain bogus (thanks Alexey!). Fix it.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 28 deletions

diff --git a/drivers/net/pppoe.c b/drivers/net/pppoe.c
index 798b8cf5f9a6..074803a78fc6 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -1040,7 +1040,7 @@ out:
 static void *pppoe_seq_start(struct seq_file *seq, loff_t *pos)
         __acquires(pn->hash_lock)
 {
-        struct pppoe_net *pn = pppoe_pernet(seq->private);
+        struct pppoe_net *pn = pppoe_pernet(seq_file_net(seq));
         loff_t l = *pos;
 
         read_lock_bh(&pn->hash_lock);
@@ -1049,7 +1049,7 @@ static void *pppoe_seq_start(struct seq_file *seq, loff_t *pos)
 
 static void *pppoe_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        struct pppoe_net *pn = pppoe_pernet(seq->private);
+        struct pppoe_net *pn = pppoe_pernet(seq_file_net(seq));
         struct pppox_sock *po;
 
         ++*pos;
@@ -1077,7 +1077,7 @@ out:
 static void pppoe_seq_stop(struct seq_file *seq, void *v)
         __releases(pn->hash_lock)
 {
-        struct pppoe_net *pn = pppoe_pernet(seq->private);
+        struct pppoe_net *pn = pppoe_pernet(seq_file_net(seq));
         read_unlock_bh(&pn->hash_lock);
 }
 
@@ -1090,30 +1090,8 @@ static const struct seq_operations pppoe_seq_ops = {
 
 static int pppoe_seq_open(struct inode *inode, struct file *file)
 {
-        struct seq_file *m;
-        struct net *net;
-        int err;
-
-        err = seq_open(file, &pppoe_seq_ops);
-        if (err)
-                return err;
-
-        m = file->private_data;
-        net = maybe_get_net(PDE_NET(PDE(inode)));
-        BUG_ON(!net);
-        m->private = net;
-
-        return err;
-}
-
-static int pppoe_seq_release(struct inode *inode, struct file *file)
-{
-        struct seq_file *m;
-
-        m = file->private_data;
-        put_net((struct net*)m->private);
-
-        return seq_release(inode, file);
+        return seq_open_net(inode, file, &pppoe_seq_ops,
+                        sizeof(struct seq_net_private));
 }
 
 static const struct file_operations pppoe_seq_fops = {
@@ -1121,7 +1099,7 @@ static const struct file_operations pppoe_seq_fops = {
         .open           = pppoe_seq_open,
         .read           = seq_read,
         .llseek         = seq_lseek,
-        .release        = pppoe_seq_release,
+        .release        = seq_release_net,
 };
 
 #endif /* CONFIG_PROC_FS */