1 files changed, 30 insertions, 21 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 27551820741e..43e17f7d7ecd 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.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 <linux/uaccess.h>
 #include <linux/crc16.h>
 #include <net/sock.h>
@@ -3937,39 +3939,42 @@ drop:
         return 0;
 }
 
-static ssize_t l2cap_sysfs_show(struct class *dev,
-                                struct class_attribute *attr,
-                                char *buf)
+static int l2cap_debugfs_show(struct seq_file *f, void *p)
 {
         struct sock *sk;
         struct hlist_node *node;
-        char *str = buf;
-        int size = PAGE_SIZE;
 
         read_lock_bh(&l2cap_sk_list.lock);
 
         sk_for_each(sk, node, &l2cap_sk_list.head) {
                 struct l2cap_pinfo *pi = l2cap_pi(sk);
-                int len;
-
-                len = snprintf(str, size, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d\n",
-                                batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst),
-                                sk->sk_state, __le16_to_cpu(pi->psm), pi->scid,
-                                pi->dcid, pi->imtu, pi->omtu, pi->sec_level);
-
-                size -= len;
-                if (size <= 0)
-                        break;
 
-                str += len;
+                seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d\n",
+                                        batostr(&bt_sk(sk)->src),
+                                        batostr(&bt_sk(sk)->dst),
+                                        sk->sk_state, __le16_to_cpu(pi->psm),
+                                        pi->scid, pi->dcid,
+                                        pi->imtu, pi->omtu, pi->sec_level);
         }
 
         read_unlock_bh(&l2cap_sk_list.lock);
 
-        return str - buf;
+        return 0;
 }
 
-static CLASS_ATTR(l2cap, S_IRUGO, l2cap_sysfs_show, NULL);
+static int l2cap_debugfs_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, l2cap_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations l2cap_debugfs_fops = {
+        .open           = l2cap_debugfs_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+static struct dentry *l2cap_debugfs;
 
 static const struct proto_ops l2cap_sock_ops = {
         .family         = PF_BLUETOOTH,
@@ -4029,8 +4034,12 @@ static int __init l2cap_init(void)
                 goto error;
         }
 
-        if (class_create_file(bt_class, &class_attr_l2cap) < 0)
-                BT_ERR("Failed to create L2CAP info file");
+        if (bt_debugfs) {
+                l2cap_debugfs = debugfs_create_file("l2cap", 0444,
+                                        bt_debugfs, NULL, &l2cap_debugfs_fops);
+                if (!l2cap_debugfs)
+                        BT_ERR("Failed to create L2CAP debug file");
+        }
 
         BT_INFO("L2CAP ver %s", VERSION);
         BT_INFO("L2CAP socket layer initialized");
@@ -4044,7 +4053,7 @@ error:
 
 static void __exit l2cap_exit(void)
 {
-        class_remove_file(bt_class, &class_attr_l2cap);
+        debugfs_remove(l2cap_debugfs);
 
         if (bt_sock_unregister(BTPROTO_L2CAP) < 0)
                 BT_ERR("L2CAP socket unregistration failed");