[PATCH] serial/68360serial: replace schedule_timeout() with msleep_interruptible()

Use msleep_interruptible() instead of schedule_timeout() in send_break() to
guarantee the task delays as expected. Change @duration's units to
milliseconds, and modify arguments in callers appropriately.

Signed-off-by: Nishanth Aravamudan <[e-mail]>
Signed-off-by: Domen Puncer <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/serial/68360serial.c

···
 /*
  * This routine sends a break character out the serial port.
  */
-static void send_break(ser_info_t *info, int duration)
+static void send_break(ser_info_t *info, unsigned int duration)
 {
-	set_current_state(TASK_INTERRUPTIBLE);
 #ifdef SERIAL_DEBUG_SEND_BREAK
 	printk("rs_send_break(%d) jiff=%lu...", duration, jiffies);
 #endif
 	begin_break(info);
-	schedule_timeout(duration);
+	msleep_interruptible(duration);
 	end_break(info);
 #ifdef SERIAL_DEBUG_SEND_BREAK
 	printk("done jiffies=%lu\n", jiffies);
···
 			if (signal_pending(current))
 				return -EINTR;
 			if (!arg) {
-				send_break(info, HZ/4);	/* 1/4 second */
+				send_break(info, 250);	/* 1/4 second */
 				if (signal_pending(current))
 					return -EINTR;
 			}
···
 			tty_wait_until_sent(tty, 0);
 			if (signal_pending(current))
 				return -EINTR;
-			send_break(info, arg ? arg*(HZ/10) : HZ/4);
+			send_break(info, arg ? arg*100 : 250);
 			if (signal_pending(current))
 				return -EINTR;
 			return 0;