diff options
| -rw-r--r-- | drivers/input/mouse/elan_i2c_core.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index a2d2077303cb..c33f2cce6ba9 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -26,6 +26,7 @@ #include <linux/init.h> #include <linux/input/mt.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/kernel.h> @@ -1141,10 +1142,13 @@ static int elan_probe(struct i2c_client *client, return error; /* - * Systems using device tree should set up interrupt via DTS, - * the rest will use the default falling edge interrupts. + * Platform code (ACPI, DTS) should normally set up interrupt + * for us, but in case it did not let's fall back to using falling + * edge to be compatible with older Chromebooks. */ - irqflags = dev->of_node ? 0 : IRQF_TRIGGER_FALLING; + irqflags = irq_get_trigger_type(client->irq); + if (!irqflags) + irqflags = IRQF_TRIGGER_FALLING; error = devm_request_threaded_irq(dev, client->irq, NULL, elan_isr, irqflags | IRQF_ONESHOT, |