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| author | Sean Nyekjaer <sean@geanix.com> | 2025-10-20 09:09:00 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-23 16:16:40 +0200 |
| commit | a4970f5087e2d60e65eefff0d353a0629a3137ac (patch) | |
| tree | 4e56677de2e7e71c9b413ebf8634d8d914fa5245 | |
| parent | 353c69c7898ec205775fe0dcc4e69930491c4608 (diff) | |
| download | linux-a4970f5087e2d60e65eefff0d353a0629a3137ac.tar.gz linux-a4970f5087e2d60e65eefff0d353a0629a3137ac.tar.bz2 linux-a4970f5087e2d60e65eefff0d353a0629a3137ac.zip | |
iio: imu: inv_icm42600: Avoid configuring if already pm_runtime suspended
[ 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: 31c24c1e93c3 ("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>
| -rw-r--r-- | drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c index a4c8bdba254c..99eb651743f8 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c @@ -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; |