[PATCH] gpio: ucb1400: Remove platform setup and teardown support

[Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>]

There is no user of these callbacks. The motivation for this change is
to stop returning an error code from the remove callback.

This is a preparation for making platform remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
 drivers/gpio/gpio-ucb1400.c | 20 --------------------
 drivers/mfd/ucb1400_core.c  |  6 ++----
 include/linux/ucb1400.h     |  2 --
 3 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/drivers/gpio/gpio-ucb1400.c b/drivers/gpio/gpio-ucb1400.c
index d2a8644864c3..386e69300332 100644
--- a/drivers/gpio/gpio-ucb1400.c
+++ b/drivers/gpio/gpio-ucb1400.c
@@ -64,34 +64,14 @@ static int ucb1400_gpio_probe(struct platform_device *dev)
 	ucb->gc.can_sleep = true;
 
 	err = devm_gpiochip_add_data(&dev->dev, &ucb->gc, ucb);
-	if (err)
-		goto err;
-
-	if (ucb->gpio_setup)
-		err = ucb->gpio_setup(&dev->dev, ucb->gc.ngpio);
 
 err:
 	return err;
 
 }
 
-static int ucb1400_gpio_remove(struct platform_device *dev)
-{
-	int err = 0;
-	struct ucb1400_gpio *ucb = platform_get_drvdata(dev);
-
-	if (ucb && ucb->gpio_teardown) {
-		err = ucb->gpio_teardown(&dev->dev, ucb->gc.ngpio);
-		if (err)
-			return err;
-	}
-
-	return err;
-}
-
 static struct platform_driver ucb1400_gpio_driver = {
 	.probe	= ucb1400_gpio_probe,
-	.remove	= ucb1400_gpio_remove,
 	.driver	= {
 		.name	= "ucb1400_gpio"
 	},
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
index 8c3832a58ef6..ac1d18039568 100644
--- a/drivers/mfd/ucb1400_core.c
+++ b/drivers/mfd/ucb1400_core.c
@@ -72,11 +72,9 @@ static int ucb1400_core_probe(struct device *dev)
 
 	/* GPIO */
 	ucb_gpio.ac97 = ac97;
-	if (pdata) {
-		ucb_gpio.gpio_setup = pdata->gpio_setup;
-		ucb_gpio.gpio_teardown = pdata->gpio_teardown;
+	if (pdata)
 		ucb_gpio.gpio_offset = pdata->gpio_offset;
-	}
+
 	ucb->ucb1400_gpio = platform_device_alloc("ucb1400_gpio", -1);
 	if (!ucb->ucb1400_gpio) {
 		err = -ENOMEM;
diff --git a/include/linux/ucb1400.h b/include/linux/ucb1400.h
index 0968ef458447..22345391350b 100644
--- a/include/linux/ucb1400.h
+++ b/include/linux/ucb1400.h
@@ -84,8 +84,6 @@ struct ucb1400_gpio {
 	struct gpio_chip	gc;
 	struct snd_ac97		*ac97;
 	int			gpio_offset;
-	int			(*gpio_setup)(struct device *dev, int ngpio);
-	int			(*gpio_teardown)(struct device *dev, int ngpio);
 };
 
 struct ucb1400_ts {

base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56
-- 
2.36.1