Re: [linux-usb-devel] [PATCH 1/5] USB: Make usb_hcd_irq work for multi-role USB controllers w/ shared irq
From: Grant Likely <hidden>
Date: 2007-11-24 17:15:43
On 11/24/07, Alan Cox [off-list ref] wrote:
On Fri, 23 Nov 2007 21:10:39 -0800 Greg KH [off-list ref] wrote:quoted
On Fri, Nov 23, 2007 at 05:24:31PM -0700, Grant Likely wrote:quoted
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?There are no such platforms. Linus made that absolutely clear every time this came up before 0 - No IRQ A platform with a physical or bus IRQ of 0 needs to remap it to a different constant.
Regardless, I should probably use the NO_IRQ macro instead. g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. grant.likely@secretlab.ca (403) 399-0195