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From: Alexander Stein <alexander.stein@ew.tq-group.com>
To: Oleksij Rempel <o.rempel@pengutronix.de>,
	Andi Shyti <andi.shyti@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	NXP Linux Team <linux-imx@nxp.com>,
	linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/1] i2c: imx: Make SDA actually optional for bus recovering
Date: Thu, 30 Nov 2023 10:57:51 +0100	[thread overview]
Message-ID: <20231130095751.65773-1-alexander.stein@ew.tq-group.com> (raw)

Both i2c_generic_scl_recovery() and the debug output indicate that SDA is
purely optional for bus recovery. But devm_gpiod_get() never returns NULL
making it mandatory. Fix this my calling devm_gpiod_get_optional instead.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
---
 drivers/i2c/busses/i2c-imx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 1775a79aeba2a..88a053987403c 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1401,7 +1401,7 @@ static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx,
 			PINCTRL_STATE_DEFAULT);
 	i2c_imx->pinctrl_pins_gpio = pinctrl_lookup_state(i2c_imx->pinctrl,
 			"gpio");
-	rinfo->sda_gpiod = devm_gpiod_get(&pdev->dev, "sda", GPIOD_IN);
+	rinfo->sda_gpiod = devm_gpiod_get_optional(&pdev->dev, "sda", GPIOD_IN);
 	rinfo->scl_gpiod = devm_gpiod_get(&pdev->dev, "scl", GPIOD_OUT_HIGH_OPEN_DRAIN);
 
 	if (PTR_ERR(rinfo->sda_gpiod) == -EPROBE_DEFER ||
-- 
2.34.1


             reply	other threads:[~2023-11-30  9:57 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-30  9:57 Alexander Stein [this message]
2023-11-30 15:51 ` [PATCH 1/1] i2c: imx: Make SDA actually optional for bus recovering Uwe Kleine-König
2023-12-03 22:04 ` Andi Shyti
2023-12-04  8:35   ` Alexander Stein
2023-12-19 17:17     ` Wolfram Sang
2023-12-04 11:04 ` Oleksij Rempel

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