linux-kernel - [PATCH] tty: st-asc: switch to using devm_gpiod

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Message-ID: <20200104202314.GA13591@dtor-ws>
Date:   Sat, 4 Jan 2020 12:23:14 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Patrice Chotard <patrice.chotard@...com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jiri Slaby <jslaby@...e.com>, linux-arm-kernel@...ts.infradead.org,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] tty: st-asc: switch to using devm_gpiod_get()

The node pointer in question is not a child node, but the node assigned
to the port device itself, so we should not be using
devm_fwnode_get_gpiod_from_child() [that is going away], but standard
devm_gpiod_get().

To maintain the previous labeling we use gpiod_set_consumer_name() after
we acquire the GPIO.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/tty/serial/st-asc.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index fb6bbb5e22344..e7048515a79ca 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -504,7 +504,6 @@ static void asc_set_termios(struct uart_port *port, struct ktermios *termios,
 			    struct ktermios *old)
 {
 	struct asc_port *ascport = to_asc_port(port);
-	struct device_node *np = port->dev->of_node;
 	struct gpio_desc *gpiod;
 	unsigned int baud;
 	u32 ctrl_val;
@@ -566,13 +565,12 @@ static void asc_set_termios(struct uart_port *port, struct ktermios *termios,
 			pinctrl_select_state(ascport->pinctrl,
 					     ascport->states[NO_HW_FLOWCTRL]);
 
-			gpiod = devm_fwnode_get_gpiod_from_child(port->dev,
-								 "rts",
-								 &np->fwnode,
-								 GPIOD_OUT_LOW,
-								 np->name);
-			if (!IS_ERR(gpiod))
+			gpiod = devm_gpiod_get(port->dev, "rts", GPIOD_OUT_LOW);
+			if (!IS_ERR(gpiod)) {
+				gpiod_set_consumer_name(gpiod,
+						port->dev->of_node->name);
 				ascport->rts = gpiod;
+			}
 		}
 	}
 
-- 
2.24.1.735.g03f4e72817-goog


-- 
Dmitry