This series was triggered by "Runtime PM usage count underflow!" when
unloading the module(s).
By testing the driver in various use cases and reading code it was
obvious that it could need some tiding up.
@Rafael:
Is checking pm_runtime_status_suspended() is a viable option?
To avoid calling regulator_disable 2x during remove()?
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
---
Changes in v4:
- Corrected review comments from David in PATCH 5/5
- Link to v3: https://lore.kernel.org/r/20250901-icm42pmreg-v3-0-ef1336246960@geanix.com
Changes in v3:
- Return early if pm_runtime_status_suspended() is set.
- Fixed various comments from Andy in "use guard() to release mutexes"
- Link to v2: https://lore.kernel.org/r/20250808-icm42pmreg-v2-0-a480279e7721@geanix.com
Changes in v2:
- Removed patch iio: imu: inv_icm42600: Use inv_icm42600_disable_vddio_reg()
- Moved changes from patch iio: imu: inv_icm42600: Remove redundant
error msg on regulator_disable() into iio: imu: inv_icm42600: Simplify
pm_runtime setup.
- Move associated sleep close to enabling of vdd
- Pass regulator as the parameter to inv_icm42600_disable_vddio_reg()
- Use devm_pm_runtime_set_active_enabled() to simplify even more
- Added a new commit that uses guard() to release mutexes
- Link to v1: https://lore.kernel.org/r/20250709-icm42pmreg-v1-0-3d0e793c99b2@geanix.com
---
Sean Nyekjaer (5):
iio: imu: inv_icm42600: Simplify pm_runtime setup
iio: imu: inv_icm42600: Drop redundant pm_runtime reinitialization in resume
iio: imu: inv_icm42600: Avoid configuring if already pm_runtime suspended
iio: imu: inv_icm42600: Use devm_regulator_get_enable() for vdd regulator
iio: imu: inv_icm42600: use guard() to release mutexes
drivers/iio/imu/inv_icm42600/inv_icm42600.h | 1 -
drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c | 24 ++---
drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c | 41 ++++----
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 117 +++++++--------------
drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c | 24 ++---
5 files changed, 70 insertions(+), 137 deletions(-)
---
base-commit: dfbbee0907fb30a1dd31ff1a84e1bd34bd824369
change-id: 20250708-icm42pmreg-24d824d978c4
Best regards,
--
Sean Nyekjaer <sean@geanix.com>