From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Date: Tue, 16 Oct 2018 10:18:01 +0000 (+0530)
Subject: serial-uartlite: Add get serial id if not provided
X-Git-Tag: v5.4-rc1~1926^2~75
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=62104b280a5a5d999c562d8e8f4c6c4eb97fb013;p=platform%2Fkernel%2Flinux-rpi.git

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 77bc9d0..441a216 100644
--- 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);