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Subject[PATCH 1/4] iio: st_sensors: remove st_sensors_deallocate_trigger() function
Date
This change converts the st_sensors_allocate_trigger() to use
device-managed functions.

The parent device of the IIO device object is used. This is based on the
assumption that all other devm_ calls in the ST sensors use this reference.

That makes the st_sensors_deallocate_trigger() function un-needed, so it
can be removed.

Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
---
drivers/iio/accel/st_accel_core.c | 18 +-------
.../common/st_sensors/st_sensors_trigger.c | 45 +++++++------------
drivers/iio/gyro/st_gyro_core.c | 18 +-------
drivers/iio/magnetometer/st_magn_core.c | 18 +-------
drivers/iio/pressure/st_pressure_core.c | 18 +-------
include/linux/iio/common/st_sensors.h | 5 ---
6 files changed, 19 insertions(+), 103 deletions(-)

diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index f1e6ec380667..a7be1633bff1 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -1380,29 +1380,13 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
return err;
}

- err = iio_device_register(indio_dev);
- if (err)
- goto st_accel_device_register_error;
-
- dev_info(&indio_dev->dev, "registered accelerometer %s\n",
- indio_dev->name);
-
- return 0;
-
-st_accel_device_register_error:
- if (adata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
- return err;
+ return iio_device_register(indio_dev);
}
EXPORT_SYMBOL(st_accel_common_probe);

void st_accel_common_remove(struct iio_dev *indio_dev)
{
- struct st_sensor_data *adata = iio_priv(indio_dev);
-
iio_device_unregister(indio_dev);
- if (adata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
}
EXPORT_SYMBOL(st_accel_common_remove);

diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index 64e0a748a855..d022157b66a2 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -119,11 +119,12 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
const struct iio_trigger_ops *trigger_ops)
{
struct st_sensor_data *sdata = iio_priv(indio_dev);
+ struct device *parent = indio_dev->dev.parent;
unsigned long irq_trig;
int err;

- sdata->trig = iio_trigger_alloc(sdata->dev, "%s-trigger",
- indio_dev->name);
+ sdata->trig = devm_iio_trigger_alloc(parent, "%s-trigger",
+ indio_dev->name);
if (sdata->trig == NULL) {
dev_err(&indio_dev->dev, "failed to allocate iio trigger.\n");
return -ENOMEM;
@@ -153,7 +154,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
sdata->sensor_settings->drdy_irq.addr_ihl,
sdata->sensor_settings->drdy_irq.mask_ihl, 1);
if (err < 0)
- goto iio_trigger_free;
+ return err;
dev_info(&indio_dev->dev,
"interrupts on the falling edge or active low level\n");
}
@@ -179,8 +180,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr) {
dev_err(&indio_dev->dev,
"edge IRQ not supported w/o stat register.\n");
- err = -EOPNOTSUPP;
- goto iio_trigger_free;
+ return -EOPNOTSUPP;
}
sdata->edge_irq = true;
} else {
@@ -205,44 +205,29 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
sdata->sensor_settings->drdy_irq.stat_drdy.addr)
irq_trig |= IRQF_SHARED;

- err = request_threaded_irq(sdata->irq,
- st_sensors_irq_handler,
- st_sensors_irq_thread,
- irq_trig,
- sdata->trig->name,
- sdata->trig);
+ err = devm_request_threaded_irq(parent,
+ sdata->irq,
+ st_sensors_irq_handler,
+ st_sensors_irq_thread,
+ irq_trig,
+ sdata->trig->name,
+ sdata->trig);
if (err) {
dev_err(&indio_dev->dev, "failed to request trigger IRQ.\n");
- goto iio_trigger_free;
+ return err;
}

- err = iio_trigger_register(sdata->trig);
+ err = devm_iio_trigger_register(parent, sdata->trig);
if (err < 0) {
dev_err(&indio_dev->dev, "failed to register iio trigger.\n");
- goto iio_trigger_register_error;
+ return err;
}
indio_dev->trig = iio_trigger_get(sdata->trig);

return 0;
-
-iio_trigger_register_error:
- free_irq(sdata->irq, sdata->trig);
-iio_trigger_free:
- iio_trigger_free(sdata->trig);
- return err;
}
EXPORT_SYMBOL(st_sensors_allocate_trigger);

-void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
-{
- struct st_sensor_data *sdata = iio_priv(indio_dev);
-
- iio_trigger_unregister(sdata->trig);
- free_irq(sdata->irq, sdata->trig);
- iio_trigger_free(sdata->trig);
-}
-EXPORT_SYMBOL(st_sensors_deallocate_trigger);
-
int st_sensors_validate_device(struct iio_trigger *trig,
struct iio_dev *indio_dev)
{
diff --git a/drivers/iio/gyro/st_gyro_core.c b/drivers/iio/gyro/st_gyro_core.c
index e8fc8af65143..cb539b47cdf4 100644
--- a/drivers/iio/gyro/st_gyro_core.c
+++ b/drivers/iio/gyro/st_gyro_core.c
@@ -515,29 +515,13 @@ int st_gyro_common_probe(struct iio_dev *indio_dev)
return err;
}

- err = iio_device_register(indio_dev);
- if (err)
- goto st_gyro_device_register_error;
-
- dev_info(&indio_dev->dev, "registered gyroscope %s\n",
- indio_dev->name);
-
- return 0;
-
-st_gyro_device_register_error:
- if (gdata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
- return err;
+ return iio_device_register(indio_dev);
}
EXPORT_SYMBOL(st_gyro_common_probe);

void st_gyro_common_remove(struct iio_dev *indio_dev)
{
- struct st_sensor_data *gdata = iio_priv(indio_dev);
-
iio_device_unregister(indio_dev);
- if (gdata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
}
EXPORT_SYMBOL(st_gyro_common_remove);

diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index 9ffd50d796bf..5be85e2405a5 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -650,29 +650,13 @@ int st_magn_common_probe(struct iio_dev *indio_dev)
return err;
}

- err = iio_device_register(indio_dev);
- if (err)
- goto st_magn_device_register_error;
-
- dev_info(&indio_dev->dev, "registered magnetometer %s\n",
- indio_dev->name);
-
- return 0;
-
-st_magn_device_register_error:
- if (mdata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
- return err;
+ return iio_device_register(indio_dev);
}
EXPORT_SYMBOL(st_magn_common_probe);

void st_magn_common_remove(struct iio_dev *indio_dev)
{
- struct st_sensor_data *mdata = iio_priv(indio_dev);
-
iio_device_unregister(indio_dev);
- if (mdata->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
}
EXPORT_SYMBOL(st_magn_common_remove);

diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index ab1c17fac807..17ebb5171d4c 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -721,29 +721,13 @@ int st_press_common_probe(struct iio_dev *indio_dev)
return err;
}

- err = iio_device_register(indio_dev);
- if (err)
- goto st_press_device_register_error;
-
- dev_info(&indio_dev->dev, "registered pressure sensor %s\n",
- indio_dev->name);
-
- return err;
-
-st_press_device_register_error:
- if (press_data->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
- return err;
+ return iio_device_register(indio_dev);
}
EXPORT_SYMBOL(st_press_common_probe);

void st_press_common_remove(struct iio_dev *indio_dev)
{
- struct st_sensor_data *press_data = iio_priv(indio_dev);
-
iio_device_unregister(indio_dev);
- if (press_data->irq > 0)
- st_sensors_deallocate_trigger(indio_dev);
}
EXPORT_SYMBOL(st_press_common_remove);

diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
index 8bdbaf3f3796..e74b55244f35 100644
--- a/include/linux/iio/common/st_sensors.h
+++ b/include/linux/iio/common/st_sensors.h
@@ -273,7 +273,6 @@ irqreturn_t st_sensors_trigger_handler(int irq, void *p);
int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
const struct iio_trigger_ops *trigger_ops);

-void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
int st_sensors_validate_device(struct iio_trigger *trig,
struct iio_dev *indio_dev);
#else
@@ -282,10 +281,6 @@ static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
{
return 0;
}
-static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
-{
- return;
-}
#define st_sensors_validate_device NULL
#endif

--
2.31.1
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