serial: sh-sci: Regtype probing doesn't need to be fatal.

This was using a BUG_ON(), but it's not strictly necessary, so relax the
constraints a bit.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 8e55e0a2733a..5ff6657fd141 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1825,6 +1825,7 @@ static int __devinit sci_init_single(struct platform_device *dev,
                                      struct plat_sci_port *p)
 {
         struct uart_port *port = &sci_port->port;
+        int ret;
 
         port->ops       = &sci_uart_ops;
         port->iotype    = UPIO_MEM;
@@ -1845,8 +1846,11 @@ static int __devinit sci_init_single(struct platform_device *dev,
                 break;
         }
 
-        if (p->regtype == SCIx_PROBE_REGTYPE)
-                BUG_ON(sci_probe_regmap(p) != 0);
+        if (p->regtype == SCIx_PROBE_REGTYPE) {
+                ret = sci_probe_regmap(p);
+                if (unlikely(!ret))
+                        return ret;
+        }
 
         if (dev) {
                 sci_port->iclk = clk_get(&dev->dev, "sci_ick");