[SERIAL] Arrange better identification of ports

Folk seem to get confused when they see two or more ttyS0 ports
appearing at boot time.  One comes from the legacy table, and
one from PNP.

Hence, display the bus ID of the device which supplied the port.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 401d94a7fe2ee541ad9701edb88378ad5eccb54b..0745ce78297414a43b9970f2b7c1c304c0b7ed68 100644 (file)
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1967,7 +1967,9 @@ uart_report_port(struct uart_driver *drv, struct uart_port *port)
                break;
        }
 
-       printk(KERN_INFO "%s%d at %s (irq = %d) is a %s\n",
+       printk(KERN_INFO "%s%s%s%d at %s (irq = %d) is a %s\n",
+              port->dev ? port->dev->bus_id : "",
+              port->dev ? ": " : "",
               drv->dev_name, port->line, address, port->irq, uart_type(port));
 }