linux-kernel - [PATCH AUTOSEL 6.14 03/15] iio: imu: st_lsm6dsx: Fix wakeup source leaks on device unbind

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Message-Id: <20250512180352.437356-3-sashal@kernel.org>
Date: Mon, 12 May 2025 14:03:38 -0400
From: Sasha Levin <sashal@...nel.org>
To: patches@...ts.linux.dev,
	stable@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	Sasha Levin <sashal@...nel.org>,
	jic23@...nel.org,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH AUTOSEL 6.14 03/15] iio: imu: st_lsm6dsx: Fix wakeup source leaks on device unbind

From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

[ Upstream commit 4551383e78d59b34eea3f4ed28ad22df99e25d59 ]

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

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Acked-by: Lorenzo Bianconi <lorenzo@...nel.org>
Link: https://patch.msgid.link/20250406-b4-device-wakeup-leak-iio-v1-3-2d7d322a4a93@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 4fdcc2acc94ed..96c6106b95eef 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -2719,8 +2719,11 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 	}
 
 	if (device_property_read_bool(dev, "wakeup-source") ||
-	    (pdata && pdata->wakeup_source))
-		device_init_wakeup(dev, true);
+	    (pdata && pdata->wakeup_source)) {
+		err = devm_device_init_wakeup(dev);
+		if (err)
+			return dev_err_probe(dev, err, "Failed to init wakeup\n");
+	}
 
 	return 0;
 }
-- 
2.39.5