[PATCH 18/21] iio: Replace IRQF_ONESHOT with IRQF_NO_THREAD

Sebastian Andrzej Siewior
2026-01-23T11:37:23Z

Passing IRQF_ONESHOT ensures that the interrupt source is masked until
the secondary (threaded) handler is done. If only a primary handler is
used then the flag makes no sense because the interrupt can not fire
(again) while its handler is running.
The flag also disallows force-threading of the primary handler and the
irq-core will warn about this.

The intention here was probably not allowing forced-threading for
handlers such as iio_trigger_generic_data_rdy_poll() will intends to
invoke hard-interrupt handlers.

Replace IRQF_ONESHOT with IRQF_NO_THREAD.

Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Cc: Puranjay Mohan <puranjay@kernel.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: David Lechner <dlechner@baylibre.com>
Cc: "Nuno Sá" <nuno.sa@analog.com>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: Marcelo Schmitt <marcelo.schmitt@analog.com>
Cc: Marcus Folkesson <marcus.folkesson@gmail.com>
Cc: Kent Gustavsson <kent@minoris.se>
Cc: Gustavo Silva <gustavograzs@gmail.com>
Cc: Nishant Malpani <nish.malpani25@gmail.com>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/iio/accel/adxl355_core.c | 3 ++-
drivers/iio/accel/adxl372.c | 9 ++++-----
drivers/iio/accel/mxc4005.c | 11 ++++-------
drivers/iio/accel/stk8ba50.c | 11 ++++-------
drivers/iio/adc/ad4170-4.c | 2 +-
drivers/iio/adc/ad7768-1.c | 5 ++---
drivers/iio/adc/ad7779.c | 2 +-
drivers/iio/adc/mcp3911.c | 2 +-
drivers/iio/adc/ti-ads131e08.c | 2 +-
drivers/iio/chemical/ens160_core.c | 9 +++------
drivers/iio/gyro/adxrs290.c | 2 +-
drivers/iio/health/afe4403.c | 9 ++++-----
drivers/iio/health/afe4404.c | 9 ++++-----
drivers/iio/magnetometer/bmc150_magn.c | 9 +++------
drivers/iio/pressure/dlhl60d.c | 6 +++---
drivers/iio/temperature/tmp006.c | 10 ++++------
16 files changed, 42 insertions(+), 59 deletions(-)

diff --git a/drivers/iio/accel/adxl355_core.c b/drivers/iio/accel/adxl355_core.c
index 5fc7f814b9077..04caa493176d3 100644
--- a/drivers/iio/accel/adxl355_core.c
+++ b/drivers/iio/accel/adxl355_core.c
@@ -770,7 +770,8 @@ static int adxl355_probe_trigger(struct iio_dev *indio_dev, int irq)

ret = devm_request_irq(data->dev, irq,
&iio_trigger_generic_data_rdy_poll,
- IRQF_ONESHOT, "adxl355_irq", data->dready_trig);
+ IRQF_NO_THREAD,
+ "adxl355_irq", data->dready_trig);
if (ret)
return dev_err_probe(data->dev, ret, "request irq %d failed\n",
irq);
diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index 46d518a2a0291..2f6aa52aeba51 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -1247,11 +1247,10 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,

indio_dev->trig = iio_trigger_get(st->dready_trig);

- ret = devm_request_threaded_irq(dev, st->irq,
- iio_trigger_generic_data_rdy_poll,
- NULL,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- indio_dev->name, st->dready_trig);
+ ret = devm_request_irq(dev, st->irq,
+ iio_trigger_generic_data_rdy_poll,
+ IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
+ indio_dev->name, st->dready_trig);
if (ret < 0)
return ret;
}
diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c
index ac973d871c8bb..a2c3cf13d0981 100644
--- a/drivers/iio/accel/mxc4005.c
+++ b/drivers/iio/accel/mxc4005.c
@@ -486,13 +486,10 @@ static int mxc4005_probe(struct i2c_client *client)
if (!data->dready_trig)
return -ENOMEM;

- ret = devm_request_threaded_irq(&client->dev, client->irq,
- iio_trigger_generic_data_rdy_poll,
- NULL,
- IRQF_TRIGGER_FALLING |
- IRQF_ONESHOT,
- "mxc4005_event",
- data->dready_trig);
+ ret = devm_request_irq(&client->dev, client->irq,
+ iio_trigger_generic_data_rdy_poll,
+ IRQF_TRIGGER_FALLING | IRQF_NO_THREAD,
+ "mxc4005_event", data->dready_trig);
if (ret) {
dev_err(&client->dev,
"failed to init threaded irq\n");
diff --git a/drivers/iio/accel/stk8ba50.c b/drivers/iio/accel/stk8ba50.c
index 384f1fbcbcb37..a9ff2a273fe1c 100644
--- a/drivers/iio/accel/stk8ba50.c
+++ b/drivers/iio/accel/stk8ba50.c
@@ -428,13 +428,10 @@ static int stk8ba50_probe(struct i2c_client *client)
}

if (client->irq > 0) {
- ret = devm_request_threaded_irq(&client->dev, client->irq,
- stk8ba50_data_rdy_trig_poll,
- NULL,
- IRQF_TRIGGER_RISING |
- IRQF_ONESHOT,
- "stk8ba50_event",
- indio_dev);
+ ret = devm_request_irq(&client->dev, client->irq,
+ stk8ba50_data_rdy_trig_poll,
+ IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
+ "stk8ba50_event", indio_dev);
if (ret < 0) {
dev_err(&client->dev, "request irq %d failed\n",
client->irq);
diff --git a/drivers/iio/adc/ad4170-4.c b/drivers/iio/adc/ad4170-4.c
index efaed92191f1b..82205bfae531e 100644
--- a/drivers/iio/adc/ad4170-4.c
+++ b/drivers/iio/adc/ad4170-4.c
@@ -2973,7 +2973,7 @@ static int ad4170_probe(struct spi_device *spi)

if (spi->irq) {
ret = devm_request_irq(dev, spi->irq, &ad4170_irq_handler,
- IRQF_ONESHOT, indio_dev->name, indio_dev);
+ IRQF_NO_THREAD, indio_dev->name, indio_dev);
if (ret)
return ret;

diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c
index d96802b7847a6..84ce23c8e5782 100644
--- a/drivers/iio/adc/ad7768-1.c
+++ b/drivers/iio/adc/ad7768-1.c
@@ -1394,9 +1394,8 @@ static int ad7768_probe(struct spi_device *spi)
if (ret)
return ret;

- ret = devm_request_irq(&spi->dev, spi->irq,
- &ad7768_interrupt,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ ret = devm_request_irq(&spi->dev, spi->irq, &ad7768_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
indio_dev->name, indio_dev);
if (ret)
return ret;
diff --git a/drivers/iio/adc/ad7779.c b/drivers/iio/adc/ad7779.c
index aac5049c9a07b..695cc79e78da5 100644
--- a/drivers/iio/adc/ad7779.c
+++ b/drivers/iio/adc/ad7779.c
@@ -840,7 +840,7 @@ static int ad7779_setup_without_backend(struct ad7779_state *st, struct iio_dev
iio_trigger_set_drvdata(st->trig, st);

ret = devm_request_irq(dev, st->spi->irq, iio_trigger_generic_data_rdy_poll,
- IRQF_ONESHOT | IRQF_NO_AUTOEN, indio_dev->name,
+ IRQF_NO_THREAD | IRQF_NO_AUTOEN, indio_dev->name,
st->trig);
if (ret)
return dev_err_probe(dev, ret, "request IRQ %d failed\n",
diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index a6f21791c6859..ddc3721f3f688 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -815,7 +815,7 @@ static int mcp3911_probe(struct spi_device *spi)
* don't enable the interrupt to avoid extra load on the system.
*/
ret = devm_request_irq(dev, spi->irq, &iio_trigger_generic_data_rdy_poll,
- IRQF_NO_AUTOEN | IRQF_ONESHOT,
+ IRQF_NO_AUTOEN | IRQF_NO_THREAD,
indio_dev->name, adc->trig);
if (ret)
return ret;
diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
index c9a20024d6b11..a585621b0bc30 100644
--- a/drivers/iio/adc/ti-ads131e08.c
+++ b/drivers/iio/adc/ti-ads131e08.c
@@ -827,7 +827,7 @@ static int ads131e08_probe(struct spi_device *spi)
if (spi->irq) {
ret = devm_request_irq(&spi->dev, spi->irq,
ads131e08_interrupt,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ IRQF_TRIGGER_FALLING | IRQF_NO_THREAD,
spi->dev.driver->name, indio_dev);
if (ret)
return dev_err_probe(&spi->dev, ret,
diff --git a/drivers/iio/chemical/ens160_core.c b/drivers/iio/chemical/ens160_core.c
index 86bde4a91bf7e..bbc96c4c62838 100644
--- a/drivers/iio/chemical/ens160_core.c
+++ b/drivers/iio/chemical/ens160_core.c
@@ -316,12 +316,9 @@ static int ens160_setup_trigger(struct iio_dev *indio_dev, int irq)

indio_dev->trig = iio_trigger_get(trig);

- ret = devm_request_threaded_irq(dev, irq,
- iio_trigger_generic_data_rdy_poll,
- NULL,
- IRQF_ONESHOT,
- indio_dev->name,
- indio_dev->trig);
+ ret = devm_request_irq(dev, irq, iio_trigger_generic_data_rdy_poll,
+ IRQF_NO_THREAD, indio_dev->name,
+ indio_dev->trig);
if (ret)
return dev_err_probe(dev, ret, "failed to request irq\n");

diff --git a/drivers/iio/gyro/adxrs290.c b/drivers/iio/gyro/adxrs290.c
index 8fcb41f45baac..3efe385ebedc4 100644
--- a/drivers/iio/gyro/adxrs290.c
+++ b/drivers/iio/gyro/adxrs290.c
@@ -597,7 +597,7 @@ static int adxrs290_probe_trigger(struct iio_dev *indio_dev)

ret = devm_request_irq(&st->spi->dev, st->spi->irq,
&iio_trigger_generic_data_rdy_poll,
- IRQF_ONESHOT, "adxrs290_irq", st->dready_trig);
+ IRQF_NO_THREAD, "adxrs290_irq", st->dready_trig);
if (ret < 0)
return dev_err_probe(&st->spi->dev, ret,
"request irq %d failed\n", st->spi->irq);
diff --git a/drivers/iio/health/afe4403.c b/drivers/iio/health/afe4403.c
index 0e5a512e3bb8f..d358f4d5e5da8 100644
--- a/drivers/iio/health/afe4403.c
+++ b/drivers/iio/health/afe4403.c
@@ -540,11 +540,10 @@ static int afe4403_probe(struct spi_device *spi)
return ret;
}

- ret = devm_request_threaded_irq(dev, afe->irq,
- iio_trigger_generic_data_rdy_poll,
- NULL, IRQF_ONESHOT,
- AFE4403_DRIVER_NAME,
- afe->trig);
+ ret = devm_request_irq(dev, afe->irq,
+ iio_trigger_generic_data_rdy_poll,
+ IRQF_NO_THREAD, AFE4403_DRIVER_NAME,
+ afe->trig);
if (ret) {
dev_err(dev, "Unable to request IRQ\n");
return ret;
diff --git a/drivers/iio/health/afe4404.c b/drivers/iio/health/afe4404.c
index 768d794e574b9..032da52a96d0e 100644
--- a/drivers/iio/health/afe4404.c
+++ b/drivers/iio/health/afe4404.c
@@ -547,11 +547,10 @@ static int afe4404_probe(struct i2c_client *client)
return ret;
}

- ret = devm_request_threaded_irq(dev, afe->irq,
- iio_trigger_generic_data_rdy_poll,
- NULL, IRQF_ONESHOT,
- AFE4404_DRIVER_NAME,
- afe->trig);
+ ret = devm_request_irq(dev, afe->irq,
+ iio_trigger_generic_data_rdy_poll,
+ IRQF_NO_THREAD, AFE4404_DRIVER_NAME,
+ afe->trig);
if (ret) {
dev_err(dev, "Unable to request IRQ\n");
return ret;
diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c
index 6a73f6e2f1f06..a022e1805dff7 100644
--- a/drivers/iio/magnetometer/bmc150_magn.c
+++ b/drivers/iio/magnetometer/bmc150_magn.c
@@ -906,12 +906,9 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
goto err_poweroff;
}

- ret = request_threaded_irq(irq,
- iio_trigger_generic_data_rdy_poll,
- NULL,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- "bmc150_magn_event",
- data->dready_trig);
+ ret = request_irq(irq, iio_trigger_generic_data_rdy_poll,
+ IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
+ "bmc150_magn_event", data->dready_trig);
if (ret < 0) {
dev_err(dev, "request irq %d failed\n", irq);
goto err_trigger_unregister;
diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c
index 8bad7162fec64..e975b733ce0a1 100644
--- a/drivers/iio/pressure/dlhl60d.c
+++ b/drivers/iio/pressure/dlhl60d.c
@@ -306,9 +306,9 @@ static int dlh_probe(struct i2c_client *client)
indio_dev->num_channels = ARRAY_SIZE(dlh_channels);

if (client->irq > 0) {
- ret = devm_request_threaded_irq(&client->dev, client->irq,
- dlh_interrupt, NULL,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ ret = devm_request_irq(&client->dev, client->irq,
+ dlh_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
st->info->name, indio_dev);
if (ret) {
dev_err(&client->dev, "failed to allocate threaded irq");
diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c
index 10bd3f221929d..d8d8c8936d177 100644
--- a/drivers/iio/temperature/tmp006.c
+++ b/drivers/iio/temperature/tmp006.c
@@ -356,12 +356,10 @@ static int tmp006_probe(struct i2c_client *client)

indio_dev->trig = iio_trigger_get(data->drdy_trig);

- ret = devm_request_threaded_irq(&client->dev, client->irq,
- iio_trigger_generic_data_rdy_poll,
- NULL,
- IRQF_ONESHOT,
- "tmp006_irq",
- data->drdy_trig);
+ ret = devm_request_irq(&client->dev, client->irq,
+ iio_trigger_generic_data_rdy_poll,
+ IRQF_NO_THREAD, "tmp006_irq",
+ data->drdy_trig);
if (ret < 0)
return ret;
}
--
2.51.0