linux-kernel - [PATCH 5.1 04/46] hwmon: (pwm-fan) Disable PWM if fetching cooling data fails

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Message-Id: <20190515090619.129811625@linuxfoundation.org>
Date:   Wed, 15 May 2019 12:56:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Guenter Rock <linux@...ck-us.net>,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: [PATCH 5.1 04/46] hwmon: (pwm-fan) Disable PWM if fetching cooling data fails

From: Stefan Wahren <stefan.wahren@...e.com>

commit 53f1647da3e8fb3e89066798f0fdc045064d353d upstream.

In case pwm_fan_of_get_cooling_data() fails we should disable the PWM
just like in the other error cases.

Fixes: 2e5219c77183 ("hwmon: (pwm-fan) Read PWM FAN configuration from device tree")
Cc: <stable@...r.kernel.org> # 4.14+
Reported-by: Guenter Rock <linux@...ck-us.net>
Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/hwmon/pwm-fan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -271,7 +271,7 @@ static int pwm_fan_probe(struct platform
 
 	ret = pwm_fan_of_get_cooling_data(&pdev->dev, ctx);
 	if (ret)
-		return ret;
+		goto err_pwm_disable;
 
 	ctx->pwm_fan_state = ctx->pwm_fan_max_state;
 	if (IS_ENABLED(CONFIG_THERMAL)) {