iio: Rename iio_trigger_poll_chained and add kernel-doc

Rename the function to iio_trigger_poll_nested. Add kernel-doc with
a note on the context where the function is expected to be called.

Signed-off-by: Mehdi Djait <[e-mail]>
Link: https://lore.kernel.org/r/841b5[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/accel/bma400_core.c

···
 
 	if (FIELD_GET(BMA400_INT_DRDY_MSK, le16_to_cpu(data->status))) {
 		mutex_unlock(&data->mutex);
-		iio_trigger_poll_chained(data->trig);
+		iio_trigger_poll_nested(data->trig);
 		return IRQ_HANDLED;
 	}
 

drivers/iio/accel/kionix-kx022a.c

···
 	mutex_lock(&data->mutex);
 
 	if (data->trigger_enabled) {
-		iio_trigger_poll_chained(data->trig);
+		iio_trigger_poll_nested(data->trig);
 		ret = IRQ_HANDLED;
 	}
 

drivers/iio/accel/mma8452.c

···
 		return IRQ_NONE;
 
 	if (src & MMA8452_INT_DRDY) {
-		iio_trigger_poll_chained(indio_dev->trig);
+		iio_trigger_poll_nested(indio_dev->trig);
 		ret = IRQ_HANDLED;
 	}
 

drivers/iio/accel/msa311.c

···
 	}
 
 	if (new_data_int_enabled)
-		iio_trigger_poll_chained(msa311->new_data_trig);
+		iio_trigger_poll_nested(msa311->new_data_trig);
 
 	return IRQ_HANDLED;
 }

drivers/iio/adc/ad7606.c

···
 
 	if (iio_buffer_enabled(indio_dev)) {
 		gpiod_set_value(st->gpio_convst, 0);
-		iio_trigger_poll_chained(st->trig);
+		iio_trigger_poll_nested(st->trig);
 	} else {
 		complete(&st->completion);
 	}

drivers/iio/adc/at91-sama5d2_adc.c

···
 {
 	struct iio_dev *indio_dev = data;
 
-	iio_trigger_poll_chained(indio_dev->trig);
+	iio_trigger_poll_nested(indio_dev->trig);
 }
 
 static int at91_adc_dma_start(struct iio_dev *indio_dev)

drivers/iio/adc/max11410.c

···
 	struct max11410_state *st = iio_priv(indio_dev);
 
 	if (iio_buffer_enabled(indio_dev))
-		iio_trigger_poll_chained(st->trig);
+		iio_trigger_poll_nested(st->trig);
 	else
 		complete(&st->completion);
 

drivers/iio/common/st_sensors/st_sensors_trigger.c

···
 	 */
 	if (sdata->hw_irq_trigger &&
 	    st_sensors_new_samples_available(indio_dev, sdata)) {
-		iio_trigger_poll_chained(p);
+		iio_trigger_poll_nested(p);
 	} else {
 		dev_dbg(indio_dev->dev.parent, "spurious IRQ\n");
 		return IRQ_NONE;
···
 		dev_dbg(indio_dev->dev.parent,
 			"more samples came in during polling\n");
 		sdata->hw_timestamp = iio_get_time_ns(indio_dev);
-		iio_trigger_poll_chained(p);
+		iio_trigger_poll_nested(p);
 	}
 
 	return IRQ_HANDLED;

drivers/iio/gyro/fxas21002c_core.c

···
 	if (!data_ready)
 		return IRQ_NONE;
 
-	iio_trigger_poll_chained(data->dready_trig);
+	iio_trigger_poll_nested(data->dready_trig);
 
 	return IRQ_HANDLED;
 }

drivers/iio/gyro/mpu3050-core.c

···
 	if (!(val & MPU3050_INT_STATUS_RAW_RDY))
 		return IRQ_NONE;
 
-	iio_trigger_poll_chained(p);
+	iio_trigger_poll_nested(p);
 
 	return IRQ_HANDLED;
 }

drivers/iio/humidity/hts221_buffer.c

···
 	if (!(status & HTS221_RH_DRDY_MASK))
 		return IRQ_NONE;
 
-	iio_trigger_poll_chained(hw->trig);
+	iio_trigger_poll_nested(hw->trig);
 
 	return IRQ_HANDLED;
 }

drivers/iio/industrialio-trigger.c

···
 }
 EXPORT_SYMBOL(iio_trigger_generic_data_rdy_poll);
 
-void iio_trigger_poll_chained(struct iio_trigger *trig)
+/**
+ * iio_trigger_poll_nested() - Call the threaded trigger handler of the
+ * consumers
+ * @trig: trigger which occurred
+ *
+ * This function should only be called from a kernel thread context.
+ */
+void iio_trigger_poll_nested(struct iio_trigger *trig)
 {
 	int i;
 
···
 		}
 	}
 }
-EXPORT_SYMBOL(iio_trigger_poll_chained);
+EXPORT_SYMBOL(iio_trigger_poll_nested);
 
 void iio_trigger_notify_done(struct iio_trigger *trig)
 {

drivers/iio/light/acpi-als.c

···
 	if (iio_buffer_enabled(indio_dev) && iio_trigger_using_own(indio_dev)) {
 		switch (event) {
 		case ACPI_ALS_NOTIFY_ILLUMINANCE:
-			iio_trigger_poll_chained(als->trig);
+			iio_trigger_poll_nested(als->trig);
 			break;
 		default:
 			/* Unhandled event */

drivers/iio/light/rpr0521.c

···
 	struct rpr0521_data *data = iio_priv(indio_dev);
 
 	if (rpr0521_is_triggered(data)) {
-		iio_trigger_poll_chained(data->drdy_trigger0);
+		iio_trigger_poll_nested(data->drdy_trigger0);
 		return IRQ_HANDLED;
 	}
 

drivers/iio/light/st_uvis25_core.c

···
 	if (!(status & ST_UVIS25_REG_UV_DA_MASK))
 		return IRQ_NONE;
 
-	iio_trigger_poll_chained(hw->trig);
+	iio_trigger_poll_nested(hw->trig);
 
 	return IRQ_HANDLED;
 }

drivers/iio/light/vcnl4000.c

···
 	}
 
 	if (isr & VCNL4010_INT_DRDY && iio_buffer_enabled(indio_dev))
-		iio_trigger_poll_chained(indio_dev->trig);
+		iio_trigger_poll_nested(indio_dev->trig);
 
 end:
 	return IRQ_HANDLED;

drivers/iio/light/vcnl4035.c

···
 							IIO_EV_TYPE_THRESH,
 							IIO_EV_DIR_EITHER),
 				iio_get_time_ns(indio_dev));
-		iio_trigger_poll_chained(data->drdy_trigger0);
+		iio_trigger_poll_nested(data->drdy_trigger0);
 		return IRQ_HANDLED;
 	}
 

drivers/iio/potentiostat/lmp91000.c

···
 
 	data->chan_select = channel != LMP91000_REG_MODECN_3LEAD;
 
-	iio_trigger_poll_chained(data->trig);
+	iio_trigger_poll_nested(data->trig);
 
 	ret = wait_for_completion_timeout(&data->completion, HZ);
 	reinit_completion(&data->completion);

drivers/iio/pressure/zpa2326.c

···
 	}
 
 	/* New sample available: dispatch internal trigger consumers. */
-	iio_trigger_poll_chained(priv->trigger);
+	iio_trigger_poll_nested(priv->trigger);
 
 	if (cont)
 		/*

drivers/iio/proximity/as3935.c

···
 
 	switch (val) {
 	case AS3935_EVENT_INT:
-		iio_trigger_poll_chained(st->trig);
+		iio_trigger_poll_nested(st->trig);
 		break;
 	case AS3935_DISTURB_INT:
 	case AS3935_NOISE_INT:

drivers/iio/trigger/iio-trig-loop.c

···
 	set_freezable();
 
 	do {
-		iio_trigger_poll_chained(trig);
+		iio_trigger_poll_nested(trig);
 	} while (likely(!kthread_freezable_should_stop(NULL)));
 
 	return 0;

include/linux/iio/trigger.h

···
 int iio_trigger_set_immutable(struct iio_dev *indio_dev, struct iio_trigger *trig);
 
 void iio_trigger_poll(struct iio_trigger *trig);
-void iio_trigger_poll_chained(struct iio_trigger *trig);
+void iio_trigger_poll_nested(struct iio_trigger *trig);
 
 irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private);