---

yaml
---
r: 338433
b: refs/heads/master
c: 40f70c0
h: refs/heads/master
i:
  338431: 14bfec1
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8c66d6d2a1a572768616ddca2c3863384b14d846
+refs/heads/master: 40f70c03e33a1eed3f3fcd13418e76abad77d117

trunk/drivers/tty/serial/sh-sci.c

@@ -2203,14 +2203,35 @@ static void serial_console_write(struct console *co, const char *s,
 {
 	struct sci_port *sci_port = &sci_ports[co->index];
 	struct uart_port *port = &sci_port->port;
-	unsigned short bits;
+	unsigned short bits, ctrl;
+	unsigned long flags;
+	int locked = 1;
+
+	local_irq_save(flags);
+	if (port->sysrq)
+		locked = 0;
+	else if (oops_in_progress)
+		locked = spin_trylock(&port->lock);
+	else
+		spin_lock(&port->lock);
+
+	/* first save the SCSCR then disable the interrupts */
+	ctrl = serial_port_in(port, SCSCR);
+	serial_port_out(port, SCSCR, sci_port->cfg->scscr);
 
 	uart_console_write(port, s, count, serial_console_putchar);
 
 	/* wait until fifo is empty and last bit has been transmitted */
 	bits = SCxSR_TDxE(port) | SCxSR_TEND(port);
 	while ((serial_port_in(port, SCxSR) & bits) != bits)
 		cpu_relax();
+
+	/* restore the SCSCR */
+	serial_port_out(port, SCSCR, ctrl);
+
+	if (locked)
+		spin_unlock(&port->lock);
+	local_irq_restore(flags);
 }
 
 static int __devinit serial_console_setup(struct console *co, char *options)