linux-kernel - [PATCH] net: dsa: lan9303: fix reset on probe

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Date:   Wed,  9 Feb 2022 14:54:54 +0000
From:   Mans Rullgard <mans@...sr.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Vladimir Oltean <olteanv@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Juergen Borleis <kernel@...gutronix.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] net: dsa: lan9303: fix reset on probe

The reset input to the LAN9303 chip is active low, and devicetree
gpio handles reflect this.  Therefore, the gpio should be requested
with an initial state of high in order for the reset signal to be
asserted.  Other uses of the gpio already use the correct polarity.

Signed-off-by: Mans Rullgard <mans@...sr.com>
---
 drivers/net/dsa/lan9303-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index aa1142d6a9f5..2de67708bbd2 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1301,7 +1301,7 @@ static int lan9303_probe_reset_gpio(struct lan9303 *chip,
 				     struct device_node *np)
 {
 	chip->reset_gpio = devm_gpiod_get_optional(chip->dev, "reset",
-						   GPIOD_OUT_LOW);
+						   GPIOD_OUT_HIGH);
 	if (IS_ERR(chip->reset_gpio))
 		return PTR_ERR(chip->reset_gpio);
 
-- 
2.35.1