[PATCH 5.15 188/570] iio: gyro: mpu3050-i2c: fix pm_runtime error handling

Greg Kroah-Hartman
2026-04-13T16:26:14Z

From: Antoniu Miclaus <antoniu.miclaus@analog.com>

commit 91f950b4cbb1aa9ea4eb3999f1463e8044b717fb upstream.

The return value of pm_runtime_get_sync() is not checked, 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@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/gyro/mpu3050-i2c.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/iio/gyro/mpu3050-i2c.c
+++ b/drivers/iio/gyro/mpu3050-i2c.c
@@ -19,8 +19,7 @@ static int mpu3050_i2c_bypass_select(str
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)