diff options
| author | Sean Nyekjaer <sean@geanix.com> | 2025-10-20 09:08:10 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-23 16:20:40 +0200 |
| commit | 7e708dbee2e828867d0858fe91f3426b5c9f1a76 (patch) | |
| tree | 24ffe20026ea1192702f2f8fe2e4f0beb826f46e | |
| parent | 29c57a688bb486b7cc87d31fc886b1879fd96143 (diff) | |
| download | linux-7e708dbee2e828867d0858fe91f3426b5c9f1a76.tar.gz linux-7e708dbee2e828867d0858fe91f3426b5c9f1a76.tar.bz2 linux-7e708dbee2e828867d0858fe91f3426b5c9f1a76.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>
[ removed apex/wakeup variable declarations ]
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 f7acf2def71b..9f88d8ca6d1b 100644 --- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c @@ -787,17 +787,15 @@ 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) { @@ -829,10 +827,13 @@ static int inv_icm42600_resume(struct device *dev) struct inv_icm42600_state *st = dev_get_drvdata(dev); struct inv_icm42600_sensor_state *gyro_st = iio_priv(st->indio_gyro); struct inv_icm42600_sensor_state *accel_st = 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; |