--- zzzz-none-000/linux-3.10.107/drivers/iio/common/st_sensors/st_sensors_trigger.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/iio/common/st_sensors/st_sensors_trigger.c	2021-02-04 17:41:59.000000000 +0000
@@ -37,8 +37,10 @@
 			IRQF_TRIGGER_RISING,
 			sdata->trig->name,
 			sdata->trig);
-	if (err)
+	if (err) {
+		dev_err(&indio_dev->dev, "failed to request trigger IRQ.\n");
 		goto request_irq_error;
+	}
 
 	iio_trigger_set_drvdata(sdata->trig, indio_dev);
 	sdata->trig->ops = trigger_ops;