[PATCH v3 00/12] iio: Remove redundant pm_runtime_mark_last_busy() calls

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Hello everyone,

Late last year I posted a set to switch to __pm_runtime_mark_last_busy()
and gradually get rid of explicit pm_runtime_mark_last_busy() calls in
drivers, embedding them in the appropriate pm_runtime_*autosuspend*()
calls. The overall feedback I got at the time was that this is an
unnecessary intermediate step, and removing the
pm_runtime_mark_last_busy() calls can be done after adding them to the
relevant Runtime PM autosuspend related functions. The latter part has
been done and is present in v6.17-rc1.

These patches are on next-20250825.

It'd be nice to merge these as fixes for 6.17.

since v2:

- Drop some unneeded newlines.

- Further clean up stm32_dac_set_enable_state().

- Avoid #ifdefs in bmc150_magn_set_power_state() by assuming
  pm_runtime_put_autosuspend() won't meaningfully fail (and what would you
  do about it anyway?).

since v1:

- Drop unneeded braces.

- Further rework call sites that simply assigned a local variable (ret) to
  return it, by removing that local variable and the redundant else
  clause.

The diff from rebased v2
(<20250708231144.971170-1-sakari.ailus@xxxxxxxxxxxxxxx>) for iio patches
is:

diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index fe1783d439de..3c5d1560b163 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -336,7 +336,6 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
 		ret = pm_runtime_resume_and_get(dev);
 	else
 		ret = pm_runtime_put_autosuspend(dev);
-
 	if (ret < 0) {
 		dev_err(dev,
 			"Failed: %s for %d\n", __func__, on);
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 393294df02db..15172ba2972c 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -228,7 +228,6 @@ static int mma8452_set_runtime_pm_state(struct i2c_client *client, bool on)
 		ret = pm_runtime_resume_and_get(&client->dev);
 	else
 		ret = pm_runtime_put_autosuspend(&client->dev);
-
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"failed to change power state to %d\n", on);
diff --git a/drivers/iio/accel/mma9551_core.c b/drivers/iio/accel/mma9551_core.c
index 247c2eda8420..2ccb1fb19b96 100644
--- a/drivers/iio/accel/mma9551_core.c
+++ b/drivers/iio/accel/mma9551_core.c
@@ -673,7 +673,6 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
 		ret = pm_runtime_resume_and_get(&client->dev);
 	else
 		ret = pm_runtime_put_autosuspend(&client->dev);
-
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"failed to change power state to %d\n", on);
diff --git a/drivers/iio/dac/stm32-dac.c b/drivers/iio/dac/stm32-dac.c
index 0988c991cf60..e8688f9d6df7 100644
--- a/drivers/iio/dac/stm32-dac.c
+++ b/drivers/iio/dac/stm32-dac.c
@@ -82,9 +82,9 @@ static int stm32_dac_set_enable_state(struct iio_dev *indio_dev, int ch,
 
 	ret = regmap_update_bits(dac->common->regmap, STM32_DAC_CR, msk, en);
 	mutex_unlock(&dac->lock);
-	if (ret < 0) {
+	if (ret) {
 		dev_err(&indio_dev->dev, "%s failed\n", str_enable_disable(en));
-		goto err_put_pm;
+		goto err_pm_put;
 	}
 
 	/*
@@ -95,14 +95,8 @@ static int stm32_dac_set_enable_state(struct iio_dev *indio_dev, int ch,
 	if (en && dac->common->hfsel)
 		udelay(1);
 
-	if (!enable)
-		pm_runtime_put_autosuspend(dev);
-
-	return 0;
-
-err_put_pm:
-	if (enable)
-		pm_runtime_put_autosuspend(dev);
+err_pm_put:
+	pm_runtime_put_autosuspend(dev);
 
 	return ret;
 }
diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c
index 7c5fef79ad04..6a73f6e2f1f0 100644
--- a/drivers/iio/magnetometer/bmc150_magn.c
+++ b/drivers/iio/magnetometer/bmc150_magn.c
@@ -257,20 +257,17 @@ static int bmc150_magn_set_power_mode(struct bmc150_magn_data *data,
 
 static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
 {
-#ifdef CONFIG_PM
-	int ret;
+	int ret = 0;
 
 	if (on)
 		ret = pm_runtime_resume_and_get(data->dev);
 	else
-		ret = pm_runtime_put_autosuspend(data->dev);
-
+		pm_runtime_put_autosuspend(data->dev);
 	if (ret < 0) {
 		dev_err(data->dev,
 			"failed to change power state to %d\n", on);
 		return ret;
 	}
-#endif
 
 	return 0;
 }


Sakari Ailus (12):
  iio: accel: Remove redundant pm_runtime_mark_last_busy() calls
  iio: adc: Remove redundant pm_runtime_mark_last_busy() calls
  iio: chemical: Remove redundant pm_runtime_mark_last_busy() calls
  iio: common: Remove redundant pm_runtime_mark_last_busy() calls
  iio: dac: Remove redundant pm_runtime_mark_last_busy() calls
  iio: gyro: Remove redundant pm_runtime_mark_last_busy() calls
  iio: imu: Remove redundant pm_runtime_mark_last_busy() calls
  iio: light: Remove redundant pm_runtime_mark_last_busy() calls
  iio: magnetometer: Remove redundant pm_runtime_mark_last_busy() calls
  iio: pressure: Remove redundant pm_runtime_mark_last_busy() calls
  iio: proximity: Remove redundant pm_runtime_mark_last_busy() calls
  iio: temperature: Remove redundant pm_runtime_mark_last_busy() calls

 drivers/iio/accel/bmc150-accel-core.c         |  7 ++-----
 drivers/iio/accel/bmi088-accel-core.c         |  3 ---
 drivers/iio/accel/fxls8962af-core.c           |  1 -
 drivers/iio/accel/kxcjk-1013.c                |  4 +---
 drivers/iio/accel/kxsd9.c                     |  3 ---
 drivers/iio/accel/mma8452.c                   |  7 ++-----
 drivers/iio/accel/mma9551_core.c              |  5 +----
 drivers/iio/accel/msa311.c                    |  6 ------
 drivers/iio/adc/ab8500-gpadc.c                |  1 -
 drivers/iio/adc/at91-sama5d2_adc.c            | 13 +------------
 drivers/iio/adc/imx8qxp-adc.c                 |  2 --
 drivers/iio/adc/imx93_adc.c                   |  1 -
 drivers/iio/adc/rcar-gyroadc.c                |  8 +++-----
 drivers/iio/adc/rzg2l_adc.c                   |  2 --
 drivers/iio/adc/stm32-adc-core.c              |  1 -
 drivers/iio/adc/stm32-adc.c                   |  7 -------
 drivers/iio/adc/sun4i-gpadc-iio.c             |  2 --
 drivers/iio/adc/ti-ads1015.c                  |  6 ++----
 drivers/iio/adc/ti-ads1100.c                  |  1 -
 drivers/iio/adc/ti-ads1119.c                  |  2 --
 drivers/iio/chemical/atlas-sensor.c           |  2 --
 drivers/iio/chemical/bme680_core.c            |  3 ---
 .../common/hid-sensors/hid-sensor-trigger.c   |  1 -
 drivers/iio/dac/stm32-dac.c                   | 19 ++++---------------
 drivers/iio/gyro/bmg160_core.c                |  4 +---
 drivers/iio/gyro/fxas21002c_core.c            |  2 --
 drivers/iio/gyro/mpu3050-core.c               |  3 ---
 drivers/iio/gyro/mpu3050-i2c.c                |  1 -
 .../iio/imu/inv_icm42600/inv_icm42600_accel.c |  5 -----
 .../imu/inv_icm42600/inv_icm42600_buffer.c    |  1 -
 .../iio/imu/inv_icm42600/inv_icm42600_gyro.c  |  5 -----
 .../iio/imu/inv_icm42600/inv_icm42600_temp.c  |  1 -
 drivers/iio/imu/inv_mpu6050/inv_mpu_core.c    |  6 ------
 drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c |  1 -
 drivers/iio/imu/kmx61.c                       |  6 ++----
 drivers/iio/light/apds9306.c                  |  2 --
 drivers/iio/light/apds9960.c                  |  1 -
 drivers/iio/light/bh1780.c                    |  1 -
 drivers/iio/light/gp2ap002.c                  |  2 --
 drivers/iio/light/isl29028.c                  | 11 +++--------
 drivers/iio/light/ltrf216a.c                  |  1 -
 drivers/iio/light/pa12203001.c                | 11 +++--------
 drivers/iio/light/rpr0521.c                   |  6 ++----
 drivers/iio/light/tsl2583.c                   | 12 +++---------
 drivers/iio/light/tsl2591.c                   |  2 --
 drivers/iio/light/us5182d.c                   | 12 +++---------
 drivers/iio/light/vcnl4000.c                  | 11 +++--------
 drivers/iio/light/vcnl4035.c                  | 11 +++--------
 drivers/iio/magnetometer/ak8974.c             |  2 --
 drivers/iio/magnetometer/ak8975.c             |  1 -
 drivers/iio/magnetometer/als31300.c           |  2 --
 drivers/iio/magnetometer/bmc150_magn.c        | 13 ++++---------
 drivers/iio/magnetometer/tmag5273.c           |  2 --
 drivers/iio/magnetometer/yamaha-yas530.c      |  2 --
 drivers/iio/pressure/bmp280-core.c            |  5 -----
 drivers/iio/pressure/icp10100.c               |  1 -
 drivers/iio/pressure/mpl115.c                 |  2 --
 drivers/iio/pressure/zpa2326.c                |  2 --
 .../iio/proximity/pulsedlight-lidar-lite-v2.c |  1 -
 drivers/iio/proximity/srf04.c                 |  4 +---
 drivers/iio/temperature/mlx90614.c            |  1 -
 drivers/iio/temperature/mlx90632.c            |  1 -
 drivers/iio/temperature/mlx90635.c            |  1 -
 63 files changed, 44 insertions(+), 221 deletions(-)

-- 
2.47.2





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