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

On Fri, Nov 23, 2007 at 05:24:31PM -0700, Grant Likely wrote:

From: Peter Korsgaard <peter.korsgaard@barco.com>

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