[media] adv7180: Pass correct flags to request_threaded_irq()

Most IRQ controllers support different types of interrupts. The adv7180
generates falling edge interrupts, so make sure to pass IRQF_TRIGGER_FALLING
to request_threaded_irq() so the IRQ controller is configured for the
correct mode.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Federico Vaga <federico.vaga@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/adv7180.c

@@ -630,7 +630,8 @@ static int adv7180_probe(struct i2c_client *client,
 
 	if (state->irq) {
 		ret = request_threaded_irq(client->irq, NULL, adv7180_irq,
-					   IRQF_ONESHOT, KBUILD_MODNAME, state);
+					   IRQF_ONESHOT | IRQF_TRIGGER_FALLING,
+					   KBUILD_MODNAME, state);
 		if (ret)
 			goto err_free_ctrl;
 	}