linux-kernel - [PATCH 2/2] pinctrl: aw9523: use enable for regulator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241001212724.309320-2-rosenp@gmail.com>
Date: Tue,  1 Oct 2024 14:27:23 -0700
From: Rosen Penev <rosenp@...il.com>
To: linux-gpio@...r.kernel.org
Cc: Linus Walleij <linus.walleij@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/2] pinctrl: aw9523: use enable for regulator

devm_regulator_get_enable_optional can be used to simplify the logic
here.

Signed-off-by: Rosen Penev <rosenp@...il.com>
---
 drivers/pinctrl/pinctrl-aw9523.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-aw9523.c b/drivers/pinctrl/pinctrl-aw9523.c
index 1374f30166bc..cf2fb26992b4 100644
--- a/drivers/pinctrl/pinctrl-aw9523.c
+++ b/drivers/pinctrl/pinctrl-aw9523.c
@@ -80,7 +80,7 @@ struct aw9523 {
 	struct regmap *regmap;
 	struct mutex i2c_lock;
 	struct gpio_desc *reset_gpio;
-	struct regulator *vio_vreg;
+	int vio_vreg;
 	struct pinctrl_dev *pctl;
 	struct gpio_chip gpio;
 	struct aw9523_irq *irq;
@@ -972,16 +972,9 @@ static int aw9523_probe(struct i2c_client *client)
 	if (IS_ERR(awi->regmap))
 		return PTR_ERR(awi->regmap);
 
-	awi->vio_vreg = devm_regulator_get_optional(dev, "vio");
-	if (IS_ERR(awi->vio_vreg)) {
-		if (PTR_ERR(awi->vio_vreg) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-		awi->vio_vreg = NULL;
-	} else {
-		ret = regulator_enable(awi->vio_vreg);
-		if (ret)
-			return ret;
-	}
+	awi->vio_vreg = devm_regulator_get_enable_optional(dev, "vio");
+	if (awi->vio_vreg && awi->vio_vreg != -ENODEV)
+		return awi->vio_vreg;
 
 	mutex_init(&awi->i2c_lock);
 	lockdep_set_subclass(&awi->i2c_lock, i2c_adapter_depth(client->adapter));
@@ -1027,8 +1020,6 @@ static int aw9523_probe(struct i2c_client *client)
 	return ret;
 
 err_disable_vregs:
-	if (awi->vio_vreg)
-		regulator_disable(awi->vio_vreg);
 	mutex_destroy(&awi->i2c_lock);
 	return ret;
 }
@@ -1043,9 +1034,7 @@ static void aw9523_remove(struct i2c_client *client)
 	 * set the pins to hardware defaults before removing the driver
 	 * to leave it in a clean, safe and predictable state.
 	 */
-	if (awi->vio_vreg) {
-		regulator_disable(awi->vio_vreg);
-	} else {
+	if (awi->vio_vreg == -ENODEV) {
 		mutex_lock(&awi->i2c_lock);
 		aw9523_hw_init(awi);
 		mutex_unlock(&awi->i2c_lock);
-- 
2.46.2