serial-uartlite: Add get serial id if not provided

Add get serial id if not provided

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index 77bc9d0cb8bf999f1e386ffee5d34491459ec4b1..441a216c1be68d36a36b81d151fdbfbc12c96f90 100644 (file)
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -763,6 +763,13 @@ static int ulite_probe(struct platform_device *pdev)
        if (prop)
                id = be32_to_cpup(prop);
 #endif
+       if (id < 0) {
+               /* Look for a serialN alias */
+               id = of_alias_get_id(pdev->dev.of_node, "serial");
+               if (id < 0)
+                       id = 0;
+       }
+
        if (!ulite_uart_driver.state) {
                dev_dbg(&pdev->dev, "uartlite: calling uart_register_driver()\n");
                ret = uart_register_driver(&ulite_uart_driver);