From: Rob Herring <robh@kernel.org>
Date: Tue, 27 Jan 2015 04:50:07 +0000 (-0600)
Subject: tty/serial: of_serial: add DT alias ID handling
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6d01bb9dc82a60580f749062a48cb47cd5caca07;p=deliverable%2Flinux.git

tty/serial: of_serial: add DT alias ID handling

Add support for alias parsing from the DT. This allows for consistent
tty numbering.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: linux-serial@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 64f1bab7e9d7..3194b42c97c0 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -128,6 +128,10 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	if (of_find_property(np, "no-loopback-test", NULL))
 		port->flags |= UPF_SKIP_TEST;
 
+	ret = of_alias_get_id(np, "serial");
+	if (ret >= 0)
+		port->line = ret;
+
 	port->dev = &ofdev->dev;
 
 	switch (type) {