linux-kernel - [PATCH 2/2] leds: lp50xx: remove unused regulator

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Date:   Wed,  3 Feb 2021 08:34:08 +0000
From:   Sven Schuchmann <schuchmann@...leissheimer.de>
To:     schuchmann@...leissheimer.de
Cc:     Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Rob Herring <robh+dt@...nel.org>, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] leds: lp50xx: remove unused regulator

The regulator for vled-supply is unused in the driver.
It is just assigned from DT and disabled in lp50xx_remove.
So the code can be removed from the driver.

Part 1 updates the documentation
Part 2 removes the code

Signed-off-by: Sven Schuchmann <schuchmann@...leissheimer.de>

---
 drivers/leds/leds-lp50xx.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/leds/leds-lp50xx.c b/drivers/leds/leds-lp50xx.c
index f13117eed976..b0871495bae3 100644
--- a/drivers/leds/leds-lp50xx.c
+++ b/drivers/leds/leds-lp50xx.c
@@ -11,7 +11,6 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/regmap.h>
-#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <uapi/linux/uleds.h>
 
@@ -275,7 +274,6 @@ struct lp50xx_led {
 /**
  * struct lp50xx -
  * @enable_gpio: hardware enable gpio
- * @regulator: LED supply regulator pointer
  * @client: pointer to the I2C client
  * @regmap: device register map
  * @dev: pointer to the devices device struct
@@ -286,7 +284,6 @@ struct lp50xx_led {
  */
 struct lp50xx {
 	struct gpio_desc *enable_gpio;
-	struct regulator *regulator;
 	struct i2c_client *client;
 	struct regmap *regmap;
 	struct device *dev;
@@ -462,10 +459,6 @@ static int lp50xx_probe_dt(struct lp50xx *priv)
 		return ret;
 	}
 
-	priv->regulator = devm_regulator_get(priv->dev, "vled");
-	if (IS_ERR(priv->regulator))
-		priv->regulator = NULL;
-
 	device_for_each_child_node(priv->dev, child) {
 		led = &priv->leds[i];
 		ret = fwnode_property_count_u32(child, "reg");
@@ -583,13 +576,6 @@ static int lp50xx_remove(struct i2c_client *client)
 		return ret;
 	}
 
-	if (led->regulator) {
-		ret = regulator_disable(led->regulator);
-		if (ret)
-			dev_err(&led->client->dev,
-				"Failed to disable regulator\n");
-	}
-
 	mutex_destroy(&led->lock);
 
 	return 0;
-- 
2.17.1