linux-kernel - [PATCH v3 1/2] iio: gyro: mpu3050-i2c: fix pm

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Message-ID: <7d7f0ddbf4b52e1522fbec24b4909d20af9a447a.1770636034.git.antoniu.miclaus@analog.com>
Date: Mon, 9 Feb 2026 14:02:15 +0200
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: Linus Walleij <linusw@...nel.org>, Jonathan Cameron <jic23@...nel.org>,
        David Lechner <dlechner@...libre.com>,
        Nuno Sá
	<nuno.sa@...log.com>,
        Andy Shevchenko <andy@...nel.org>, <linux-iio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC: Antoniu Miclaus <antoniu.miclaus@...log.com>
Subject: [PATCH v3 1/2] iio: gyro: mpu3050-i2c: fix pm_runtime error handling

pm_runtime_get_sync() does not check its return value, and the
function always returns success. This allows I2C mux operations to
proceed even when the device fails to resume.

Use pm_runtime_resume_and_get() and propagate its return value to
properly handle resume failures.

Fixes: 3904b28efb2c ("iio: gyro: Add driver for the MPU-3050 gyroscope")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
Changes in v3:
- Rename patch to focus on fix rather than API change
- Reword commit message
- Add Fixes: tag
 drivers/iio/gyro/mpu3050-i2c.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/gyro/mpu3050-i2c.c b/drivers/iio/gyro/mpu3050-i2c.c
index 092878f2c886..6549b22e643d 100644
--- a/drivers/iio/gyro/mpu3050-i2c.c
+++ b/drivers/iio/gyro/mpu3050-i2c.c
@@ -19,8 +19,7 @@ static int mpu3050_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id)
 	struct mpu3050 *mpu3050 = i2c_mux_priv(mux);
 
 	/* Just power up the device, that is all that is needed */
-	pm_runtime_get_sync(mpu3050->dev);
-	return 0;
+	return pm_runtime_resume_and_get(mpu3050->dev);
 }
 
 static int mpu3050_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id)
-- 
2.43.0