Bluetooth: __l2cap_wait_ack() use msecs_to_jiffies()

Use msecs_to_jiffies() instead of using HZ so that it
is easier to specify the time in milliseconds.

Also add a #define L2CAP_WAIT_ACK_POLL_PERIOD to specify the 200ms
polling period so that it is defined in a single place.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

include/net/bluetooth/l2cap.h

@@ -55,6 +55,7 @@
 #define L2CAP_INFO_TIMEOUT		msecs_to_jiffies(4000)
 #define L2CAP_MOVE_TIMEOUT		msecs_to_jiffies(4000)
 #define L2CAP_MOVE_ERTX_TIMEOUT		msecs_to_jiffies(60000)
+#define L2CAP_WAIT_ACK_POLL_PERIOD	msecs_to_jiffies(200)
 
 #define L2CAP_A2MP_DEFAULT_MTU		670
 

net/bluetooth/l2cap_sock.c

@@ -1058,7 +1058,7 @@ static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan)
 {
 	DECLARE_WAITQUEUE(wait, current);
 	int err = 0;
-	int timeo = HZ/5;
+	int timeo = L2CAP_WAIT_ACK_POLL_PERIOD;
 
 	add_wait_queue(sk_sleep(sk), &wait);
 	set_current_state(TASK_INTERRUPTIBLE);
@@ -1066,7 +1066,7 @@ static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan)
 		BT_DBG("Waiting for %d ACKs", chan->unacked_frames);
 
 		if (!timeo)
-			timeo = HZ/5;
+			timeo = L2CAP_WAIT_ACK_POLL_PERIOD;
 
 		if (signal_pending(current)) {
 			err = sock_intr_errno(timeo);