Bluetooth: convert chan_lock to mutex (d01b2ff4) · Commits · e / devices / android_kernel_oneplus_sm7250

include/net/bluetooth/l2cap.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -536,7 +536,7 @@ struct l2cap_conn {
	struct smp_chan *smp_chan;		struct smp_chan *smp_chan;

	struct list_head chan_l;		struct list_head chan_l;
	rwlock_t chan_lock;		struct mutex chan_lock;
	};		};

	#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01		#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01

net/bluetooth/l2cap_core.c

+26 −26

Original line number	Original line	Diff line number	Diff line
	@@ -115,11 +115,11 @@ static struct l2cap_chan l2cap_get_chan_by_scid(struct l2cap_conn conn, u16 ci
	{		{
	struct l2cap_chan *c;		struct l2cap_chan *c;

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);
	c = __l2cap_get_chan_by_scid(conn, cid);		c = __l2cap_get_chan_by_scid(conn, cid);
	if (c)		if (c)
	lock_sock(c->sk);		lock_sock(c->sk);
	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	return c;		return c;
	}		}

	@@ -138,11 +138,11 @@ static inline struct l2cap_chan l2cap_get_chan_by_ident(struct l2cap_conn conn
	{		{
	struct l2cap_chan *c;		struct l2cap_chan *c;

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);
	c = __l2cap_get_chan_by_ident(conn, ident);		c = __l2cap_get_chan_by_ident(conn, ident);
	if (c)		if (c)
	lock_sock(c->sk);		lock_sock(c->sk);
	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	return c;		return c;
	}		}

	@@ -381,9 +381,9 @@ static void l2cap_chan_del(struct l2cap_chan *chan, int err)

	if (conn) {		if (conn) {
	/* Delete from channel list */		/* Delete from channel list */
	write_lock_bh(&conn->chan_lock);		mutex_lock(&conn->chan_lock);
	list_del(&chan->list);		list_del(&chan->list);
	write_unlock_bh(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	chan_put(chan);		chan_put(chan);

	chan->conn = NULL;		chan->conn = NULL;
	@@ -754,7 +754,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)

	BT_DBG("conn %p", conn);		BT_DBG("conn %p", conn);

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) {		list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) {
	struct sock *sk = chan->sk;		struct sock *sk = chan->sk;
	@@ -780,9 +780,9 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
	&chan->conf_state)) {		&chan->conf_state)) {
	/* l2cap_chan_close() calls list_del(chan)		/* l2cap_chan_close() calls list_del(chan)
	* so release the lock */		* so release the lock */
	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	l2cap_chan_close(chan, ECONNRESET);		l2cap_chan_close(chan, ECONNRESET);
	read_lock(&conn->chan_lock);		utex_lock(&conn->chan_lock);
	bh_unlock_sock(sk);		bh_unlock_sock(sk);
	continue;		continue;
	}		}
	@@ -838,7 +838,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
	bh_unlock_sock(sk);		bh_unlock_sock(sk);
	}		}

	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	}		}

	/* Find socket with cid and source bdaddr.		/* Find socket with cid and source bdaddr.
	@@ -903,7 +903,7 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)

	sk = chan->sk;		sk = chan->sk;

	write_lock_bh(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	hci_conn_hold(conn->hcon);		hci_conn_hold(conn->hcon);

	@@ -919,7 +919,7 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
	l2cap_state_change(chan, BT_CONNECTED);		l2cap_state_change(chan, BT_CONNECTED);
	parent->sk_data_ready(parent, 0);		parent->sk_data_ready(parent, 0);

	write_unlock_bh(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);

	clean:		clean:
	release_sock(parent);		release_sock(parent);
	@@ -954,7 +954,7 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
	if (conn->hcon->out && conn->hcon->type == LE_LINK)		if (conn->hcon->out && conn->hcon->type == LE_LINK)
	smp_conn_security(conn, conn->hcon->pending_sec_level);		smp_conn_security(conn, conn->hcon->pending_sec_level);

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	list_for_each_entry(chan, &conn->chan_l, list) {		list_for_each_entry(chan, &conn->chan_l, list) {
	struct sock *sk = chan->sk;		struct sock *sk = chan->sk;
	@@ -976,7 +976,7 @@ static void l2cap_conn_ready(struct l2cap_conn *conn)
	bh_unlock_sock(sk);		bh_unlock_sock(sk);
	}		}

	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	}		}

	/* Notify sockets that we cannot guaranty reliability anymore */		/* Notify sockets that we cannot guaranty reliability anymore */
	@@ -986,7 +986,7 @@ static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err)

	BT_DBG("conn %p", conn);		BT_DBG("conn %p", conn);

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	list_for_each_entry(chan, &conn->chan_l, list) {		list_for_each_entry(chan, &conn->chan_l, list) {
	struct sock *sk = chan->sk;		struct sock *sk = chan->sk;
	@@ -995,7 +995,7 @@ static void l2cap_conn_unreliable(struct l2cap_conn *conn, int err)
	sk->sk_err = err;		sk->sk_err = err;
	}		}

	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	}		}

	static void l2cap_info_timeout(unsigned long arg)		static void l2cap_info_timeout(unsigned long arg)
	@@ -1086,7 +1086,7 @@ static struct l2cap_conn l2cap_conn_add(struct hci_conn hcon, u8 status)
	conn->feat_mask = 0;		conn->feat_mask = 0;

	spin_lock_init(&conn->lock);		spin_lock_init(&conn->lock);
	rwlock_init(&conn->chan_lock);		mutex_init(&conn->chan_lock);

	INIT_LIST_HEAD(&conn->chan_l);		INIT_LIST_HEAD(&conn->chan_l);

	@@ -1104,9 +1104,9 @@ static struct l2cap_conn l2cap_conn_add(struct hci_conn hcon, u8 status)

	static inline void l2cap_chan_add(struct l2cap_conn conn, struct l2cap_chan chan)		static inline void l2cap_chan_add(struct l2cap_conn conn, struct l2cap_chan chan)
	{		{
	write_lock_bh(&conn->chan_lock);		mutex_lock(&conn->chan_lock);
	__l2cap_chan_add(conn, chan);		__l2cap_chan_add(conn, chan);
	write_unlock_bh(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	}		}

	/* ---- Socket interface ---- */		/* ---- Socket interface ---- */
	@@ -1771,7 +1771,7 @@ static void l2cap_raw_recv(struct l2cap_conn conn, struct sk_buff skb)

	BT_DBG("conn %p", conn);		BT_DBG("conn %p", conn);

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);
	list_for_each_entry(chan, &conn->chan_l, list) {		list_for_each_entry(chan, &conn->chan_l, list) {
	struct sock *sk = chan->sk;		struct sock *sk = chan->sk;
	if (chan->chan_type != L2CAP_CHAN_RAW)		if (chan->chan_type != L2CAP_CHAN_RAW)
	@@ -1787,7 +1787,7 @@ static void l2cap_raw_recv(struct l2cap_conn conn, struct sk_buff skb)
	if (chan->ops->recv(chan->data, nskb))		if (chan->ops->recv(chan->data, nskb))
	kfree_skb(nskb);		kfree_skb(nskb);
	}		}
	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	}		}

	/* ---- L2CAP signalling commands ---- */		/* ---- L2CAP signalling commands ---- */
	@@ -2587,11 +2587,11 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd

	sk = chan->sk;		sk = chan->sk;

	write_lock_bh(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	/* Check if we already have channel with that dcid */		/* Check if we already have channel with that dcid */
	if (__l2cap_get_chan_by_dcid(conn, scid)) {		if (__l2cap_get_chan_by_dcid(conn, scid)) {
	write_unlock_bh(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);
	sock_set_flag(sk, SOCK_ZAPPED);		sock_set_flag(sk, SOCK_ZAPPED);
	chan->ops->close(chan->data);		chan->ops->close(chan->data);
	goto response;		goto response;
	@@ -2637,7 +2637,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
	status = L2CAP_CS_NO_INFO;		status = L2CAP_CS_NO_INFO;
	}		}

	write_unlock_bh(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);

	response:		response:
	release_sock(parent);		release_sock(parent);
	@@ -4474,7 +4474,7 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
	del_timer(&conn->security_timer);		del_timer(&conn->security_timer);
	}		}

	read_lock(&conn->chan_lock);		mutex_lock(&conn->chan_lock);

	list_for_each_entry(chan, &conn->chan_l, list) {		list_for_each_entry(chan, &conn->chan_l, list) {
	struct sock *sk = chan->sk;		struct sock *sk = chan->sk;
	@@ -4554,7 +4554,7 @@ static int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt)
	bh_unlock_sock(sk);		bh_unlock_sock(sk);
	}		}

	read_unlock(&conn->chan_lock);		mutex_unlock(&conn->chan_lock);

	return 0;		return 0;
	}		}