1 files changed, 29 insertions, 12 deletions

diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index ca87d6ac6a2..8ed3c37684f 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -40,6 +40,8 @@
 #include <linux/skbuff.h>
 #include <linux/list.h>
 #include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
 #include <net/sock.h>
 
 #include <asm/system.h>
@@ -395,7 +397,8 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a
 
 	BT_DBG("sk %p", sk);
 
-	if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc))
+	if (alen < sizeof(struct sockaddr_rc) ||
+	    addr->sa_family != AF_BLUETOOTH)
 		return -EINVAL;
 
 	lock_sock(sk);
@@ -1061,28 +1064,38 @@ done:
 	return result;
 }
 
-static ssize_t rfcomm_sock_sysfs_show(struct class *dev,
-				      struct class_attribute *attr,
-				      char *buf)
+static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p)
 {
 	struct sock *sk;
 	struct hlist_node *node;
-	char *str = buf;
 
 	read_lock_bh(&rfcomm_sk_list.lock);
 
 	sk_for_each(sk, node, &rfcomm_sk_list.head) {
-		str += sprintf(str, "%s %s %d %d\n",
-				batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
+		seq_printf(f, "%s %s %d %d\n",
+				batostr(&bt_sk(sk)->src),
+				batostr(&bt_sk(sk)->dst),
 				sk->sk_state, rfcomm_pi(sk)->channel);
 	}
 
 	read_unlock_bh(&rfcomm_sk_list.lock);
 
-	return (str - buf);
+	return 0;
 }
 
-static CLASS_ATTR(rfcomm, S_IRUGO, rfcomm_sock_sysfs_show, NULL);
+static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rfcomm_sock_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations rfcomm_sock_debugfs_fops = {
+	.open		= rfcomm_sock_debugfs_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static struct dentry *rfcomm_sock_debugfs;
 
 static const struct proto_ops rfcomm_sock_ops = {
 	.family		= PF_BLUETOOTH,
@@ -1122,8 +1135,12 @@ int __init rfcomm_init_sockets(void)
 	if (err < 0)
 		goto error;
 
-	if (class_create_file(bt_class, &class_attr_rfcomm) < 0)
-		BT_ERR("Failed to create RFCOMM info file");
+	if (bt_debugfs) {
+		rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444,
+				bt_debugfs, NULL, &rfcomm_sock_debugfs_fops);
+		if (!rfcomm_sock_debugfs)
+			BT_ERR("Failed to create RFCOMM debug file");
+	}
 
 	BT_INFO("RFCOMM socket layer initialized");
 
@@ -1137,7 +1154,7 @@ error:
 
 void rfcomm_cleanup_sockets(void)
 {
-	class_remove_file(bt_class, &class_attr_rfcomm);
+	debugfs_remove(rfcomm_sock_debugfs);
 
 	if (bt_sock_unregister(BTPROTO_RFCOMM) < 0)
 		BT_ERR("RFCOMM socket layer unregistration failed");