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

Greg KH gregkh at suse.de
Sat Nov 24 16:10:39 EST 2007

On Fri, Nov 23, 2007 at 05:24:31PM -0700, Grant Likely wrote:
> From: Peter Korsgaard <peter.korsgaard at 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?


greg k-h

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