gpio-pca953x.c

[Naitik Amin <naitik.amin@ametek.com>]

HI there,

I am trying to use the gpio driver for pca953x with IRQ enabled config. When 
the device gets probbed, I gives me an error saying :
"failed to set trigger mode 8"

The probe called,
ret = devm_request_threaded_irq(&client->dev,
					client->irq,
					   NULL,
					   pca953x_irq_handler,
					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
					   dev_name(&client->dev), chip);

with IRQF_TRIGGER_LOW as a flag

I did some tracing and found out, irq set type, went to gic_set_type in irq-
gic.c ( http://lxr.free-electrons.com/source/drivers/irqchip/irq-gic.c#L187 )

But gic_set_type, only wants to see either IRQF_TRIGGER_HIGH OR 
IRQF_TRIGGER_LOW, thats why it returned.

Questions
1. Is it correct that irq set type went to gic_set_type, bcoz pca953x does 
provide one of itself.