[SERIAL] Make uart_line_info() correctly tell MMIO from I/O port

/proc/tty/driver/serial incorrectly claims that UARTs having iotype of
UPIO_MEM32, UPIO_AU, or UPIO_TSI are I/O mapped.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 5f7ba1adb309..d7e28ab4c313 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1662,16 +1662,16 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
         struct uart_port *port = state->port;
         char stat_buf[32];
         unsigned int status;
-        int ret;
+        int mmio, ret;
 
         if (!port)
                 return 0;
 
+        mmio = port->iotype >= UPIO_MEM;
         ret = sprintf(buf, "%d: uart:%s %s%08lX irq:%d",
                         port->line, uart_type(port),
-                        port->iotype == UPIO_MEM ? "mmio:0x" : "port:",
-                        port->iotype == UPIO_MEM ? port->mapbase :
-                                                (unsigned long) port->iobase,
+                        mmio ? "mmio:0x" : "port:",
+                        mmio ? port->mapbase : (unsigned long) port->iobase,
                         port->irq);
 
         if (port->type == PORT_UNKNOWN) {