Subject: Re: [PATCH 1/5] USB: Make usb_hcd_irq work for multi-role USB controllers w/ shared irq

From: Greg KH <[email-masked]>
Date: Fri, 23 Nov 2007 21:10:39 -0800

On Fri, Nov 23, 2007 at 05:24:31PM -0700, Grant Likely wrote:
> From: Peter Korsgaard <[email-masked]>
> 
> Some multi-role (host/peripheral) USB controllers use a shared interrupt
> line for all parts of the chip. Export usb_hcd_irq so drivers can call it
> from their interrupt handler instead of duplicating code.
> Drivers pass an irqnum of 0 to usb_add_hcd to signal that the interrupt handler
> shouldn't be registerred by the core.

What about for platforms where irq 0 is a valid irq?

thanks,

greg k-h