Hi Fabrice,

> +		return irq_event ? irq_event : -ENODEV;

Maybe -ENOENT instead of -ENODEV? I mean you have a dev_err there, so
the driver core should probably also complain?

You could also shorten the ternary operator to:

	return irq_event ? : -E<whatyouprefer>;

However, both are minor nits. If you prefer to keep the patch as is,
fine with me.

Regards,

   Wolfram