linux-kernel - [PATCH v3 3/3] tty: st-asc: Update tty alias

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Date:   Wed, 7 Mar 2018 09:49:57 +0100
From:   <patrice.chotard@...com>
To:     <robh+dt@...nel.org>, <mark.rutland@....com>,
        <linux@...linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <gregkh@...uxfoundation.org>, <jslaby@...e.com>,
        <linux-serial@...r.kernel.org>
CC:     <patrice.chotard@...com>
Subject: [PATCH v3 3/3] tty: st-asc: Update tty alias

From: Patrice Chotard <patrice.chotard@...com>

Since dtc v1.4.6-9-gaadd0b65c987, aliases property name
must include only lowercase and '-'.

After having updated all STi boards serial aliases from "ttyASN"
to "serialN", st-asc driver need to be updated accordingly as tty
aliases id is retrieved using of_alias_get_id().

Signed-off-by: Patrice Chotard <patrice.chotard@...com>
---
v3: _ update st-asc driver with "serial" alias prefix and keep "ttyAS" in second choice
v2: _ update st-asc driver with "serial" alias prefix

 drivers/tty/serial/st-asc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index c763253514e9..5f9f01fac6dd 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -782,7 +782,9 @@ static struct asc_port *asc_of_get_asc_port(struct platform_device *pdev)
 	if (!np)
 		return NULL;
 
-	id = of_alias_get_id(np, ASC_SERIAL_NAME);
+	id = of_alias_get_id(np, "serial");
+	if (id < 0)
+		id = of_alias_get_id(np, ASC_SERIAL_NAME);
 
 	if (id < 0)
 		id = 0;
-- 
1.9.1