linux-kernel - [PATCH 1/8] mfd: 88pm886: Fix wakeup source leaks on device unbind

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Message-Id: <20250406-mfd-device-wakekup-leak-v1-1-318e14bdba0a@linaro.org>
Date: Sun, 06 Apr 2025 21:50:09 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Karel Balej <balejk@...fyz.cz>, Lee Jones <lee@...nel.org>, 
 Chanwoo Choi <cw00.choi@...sung.com>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>
Cc: linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/8] mfd: 88pm886: Fix wakeup source leaks on device unbind

Device can be unbound, so driver must also release memory for the wakeup
source.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/mfd/88pm886.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/88pm886.c b/drivers/mfd/88pm886.c
index 891fdce5d8c12474e5e01152ca5fec8c88470b63..177878aa32f86eb59705ba6a1205eea43142d920 100644
--- a/drivers/mfd/88pm886.c
+++ b/drivers/mfd/88pm886.c
@@ -124,7 +124,11 @@ static int pm886_probe(struct i2c_client *client)
 	if (err)
 		return dev_err_probe(dev, err, "Failed to register power off handler\n");
 
-	device_init_wakeup(dev, device_property_read_bool(dev, "wakeup-source"));
+	if (device_property_read_bool(dev, "wakeup-source")) {
+		err = devm_device_init_wakeup(dev);
+		if (err)
+			return dev_err_probe(dev, err, "Failed to init wakeup\n");
+	}
 
 	return 0;
 }

-- 
2.45.2