iio: Use IRQF_NO_THREAD

[ Upstream commit 04d390a ]

The interrupt handler iio_trigger_generic_data_rdy_poll() will invoke
other interrupt handler and this supposed to happen from within the
hardirq.

Use IRQF_NO_THREAD to forbid forced-threading.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Sebastian Andrzej Siewior

drivers/iio/accel/bma180.c

@@ -986,8 +986,9 @@ static int bma180_probe(struct i2c_client *client)
 		}
 
 		ret = devm_request_irq(dev, client->irq,
-			iio_trigger_generic_data_rdy_poll, IRQF_TRIGGER_RISING,
-			"bma180_event", data->trig);
+				       iio_trigger_generic_data_rdy_poll,
+				       IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
+				       "bma180_event", data->trig);
 		if (ret) {
 			dev_err(dev, "unable to request IRQ\n");
 			goto err_trigger_free;

drivers/iio/adc/ad7766.c

@@ -261,7 +261,7 @@ static int ad7766_probe(struct spi_device *spi)
 		 * don't enable the interrupt to avoid extra load on the system
 		 */
 		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
-				       IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN,
+				       IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN | IRQF_NO_THREAD,
 				       dev_name(&spi->dev),
 				       ad7766->trig);
 		if (ret < 0)

drivers/iio/gyro/itg3200_buffer.c

@@ -118,11 +118,9 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev)
 	if (!st->trig)
 		return -ENOMEM;
 
-	ret = request_irq(st->i2c->irq,
-			  &iio_trigger_generic_data_rdy_poll,
-			  IRQF_TRIGGER_RISING,
-			  "itg3200_data_rdy",
-			  st->trig);
+	ret = request_irq(st->i2c->irq, &iio_trigger_generic_data_rdy_poll,
+			  IRQF_TRIGGER_RISING | IRQF_NO_THREAD,
+			  "itg3200_data_rdy", st->trig);
 	if (ret)
 		goto error_free_trig;
 

drivers/iio/light/si1145.c

@@ -1248,7 +1248,7 @@ static int si1145_probe_trigger(struct iio_dev *indio_dev)
 
 	ret = devm_request_irq(&client->dev, client->irq,
 			  iio_trigger_generic_data_rdy_poll,
-			  IRQF_TRIGGER_FALLING,
+			  IRQF_TRIGGER_FALLING | IRQF_NO_THREAD,
 			  "si1145_irq",
 			  trig);
 	if (ret < 0) {