From c44fc98f0a8ffd94fa0bd291928e7e312ffc7ca4 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michal=20Vok=C3=A1=C4=8D?= Date: Fri, 26 Jan 2024 11:49:35 +0100 Subject: [PATCH] net: dsa: qca8k: fix illegal usage of GPIO MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit When working with GPIO, its direction must be set either when the GPIO is requested by gpiod_get*() or later on by one of the gpiod_direction_*() functions. Neither of this is done here which results in undefined behavior on some systems. As the reset GPIO is used right after it is requested here, it makes sense to configure it as GPIOD_OUT_HIGH right away. With that, the following gpiod_set_value_cansleep(1) becomes redundant and can be safely removed. Fixes: a653f2f538f9 ("net: dsa: qca8k: introduce reset via gpio feature") Signed-off-by: Michal Vokáč Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/1706266175-3408-1-git-send-email-michal.vokac@ysoft.com Signed-off-by: Jakub Kicinski --- drivers/net/dsa/qca/qca8k-8xxx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c index c51f40960961f..7a864329cb726 100644 --- a/drivers/net/dsa/qca/qca8k-8xxx.c +++ b/drivers/net/dsa/qca/qca8k-8xxx.c @@ -2051,12 +2051,11 @@ qca8k_sw_probe(struct mdio_device *mdiodev) priv->info = of_device_get_match_data(priv->dev); priv->reset_gpio = devm_gpiod_get_optional(priv->dev, "reset", - GPIOD_ASIS); + GPIOD_OUT_HIGH); if (IS_ERR(priv->reset_gpio)) return PTR_ERR(priv->reset_gpio); if (priv->reset_gpio) { - gpiod_set_value_cansleep(priv->reset_gpio, 1); /* The active low duration must be greater than 10 ms * and checkpatch.pl wants 20 ms. */ -- 2.30.2