linux-kernel - [PATCH 3/3] i2c: mux: gpio: don't fiddle with GPIOLIB internals

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Message-Id: <20231011130204.52265-4-brgl@bgdev.pl>
Date:   Wed, 11 Oct 2023 15:02:04 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy@...nel.org>,
        Peter Korsgaard <peter.korsgaard@...co.com>,
        Peter Rosin <peda@...ntia.se>
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 3/3] i2c: mux: gpio: don't fiddle with GPIOLIB internals

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Use the relevant API functions to retrieve the address of the
underlying struct device instead of accessing GPIOLIB private structures
manually.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 drivers/i2c/muxes/i2c-mux-gpio.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 5d5cbe0130cd..48a872a8196b 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -14,8 +14,7 @@
 #include <linux/slab.h>
 #include <linux/bits.h>
 #include <linux/gpio/consumer.h>
-/* FIXME: stop poking around inside gpiolib */
-#include "../../gpio/gpiolib.h"
+#include <linux/gpio/driver.h>
 
 struct gpiomux {
 	struct i2c_mux_gpio_platform_data data;
@@ -176,7 +175,8 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
 	}
 
 	for (i = 0; i < ngpios; i++) {
-		struct device *gpio_dev;
+		struct gpio_device *gdev;
+		struct device *dev;
 		struct gpio_desc *gpiod;
 		enum gpiod_flags flag;
 
@@ -195,9 +195,9 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev)
 		if (!muxc->mux_locked)
 			continue;
 
-		/* FIXME: find a proper way to access the GPIO device */
-		gpio_dev = &gpiod->gdev->dev;
-		muxc->mux_locked = i2c_root_adapter(gpio_dev) == root;
+		gdev = gpiod_to_gpio_device(gpiod);
+		dev = gpio_device_to_device(gdev);
+		muxc->mux_locked = i2c_root_adapter(dev) == root;
 	}
 
 	if (muxc->mux_locked)
-- 
2.39.2