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iio: imu: inv_icm42600: Avoid configuring if already pm_runtime suspended

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[ Upstream commit 466f7a2fef2a4e426f809f79845a1ec1aeb558f4 ]

Do as in suspend, skip resume configuration steps if the device is already
pm_runtime suspended. This avoids reconfiguring a device that is already
in the correct low-power state and ensures that pm_runtime handles the
power state transitions properly.

Fixes: 31c24c1e93 ("iio: imu: inv_icm42600: add core of new inv_icm42600 driver")
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Link: https://patch.msgid.link/20250901-icm42pmreg-v3-3-ef1336246960@geanix.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ adjusted context due to missing APEX/WoM features in older kernel version ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sean Nyekjaer
2025-10-20 09:09:00 -04:00
committed by Greg Kroah-Hartman
parent 353c69c789
commit a4970f5087
1 changed files with 6 additions and 5 deletions
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11
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
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@@ -687,17 +687,15 @@ EXPORT_SYMBOL_NS_GPL(inv_icm42600_core_probe, IIO_ICM42600);
static int inv_icm42600_suspend(struct device *dev)
{
struct inv_icm42600_state *st = dev_get_drvdata(dev);
int ret;
int ret = 0;
mutex_lock(&st->lock);
st->suspended.gyro = st->conf.gyro.mode;
st->suspended.accel = st->conf.accel.mode;
st->suspended.temp = st->conf.temp_en;
if (pm_runtime_suspended(dev)) {
ret = 0;
if (pm_runtime_suspended(dev))
goto out_unlock;
}
/* disable FIFO data streaming */
if (st->fifo.on) {
@@ -729,10 +727,13 @@ static int inv_icm42600_resume(struct device *dev)
struct inv_icm42600_state *st = dev_get_drvdata(dev);
struct inv_sensors_timestamp *gyro_ts = iio_priv(st->indio_gyro);
struct inv_sensors_timestamp *accel_ts = iio_priv(st->indio_accel);
int ret;
int ret = 0;
mutex_lock(&st->lock);
if (pm_runtime_suspended(dev))
goto out_unlock;
ret = inv_icm42600_enable_regulator_vddio(st);
if (ret)
goto out_unlock;