Re: [RFC 11/17] usb/ehci: make au1xxx use generic add code

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On Mon, Aug 29, 2011 at 02:08:03PM +0530, ABRAHAM, KISHON VIJAY wrote:
> On Mon, Aug 29, 2011 at 1:40 PM, Sebastian Andrzej Siewior
> <sebastian@xxxxxxxxxxxxx> wrote:
> > On Mon, Aug 29, 2011 at 12:05:40PM +0530, ABRAHAM, KISHON VIJAY wrote:
> >> > -       ret = usb_add_hcd(hcd, pdev->resource[1].start,
> >> > -                         IRQF_DISABLED | IRQF_SHARED);
> >>
> >> here the irqflag is set to IRQF_DISABLED | IRQF_SHARED. But your
> >> generic ehci_hcd_plat_add
> >> sets it to IRQF_SHARED always.
> >
> > So? The former is defined to 0. The removal of IRQF_DISABLED is on my todo
> > list.
> 
> I see IRQF_DISABLED defined to 0x20 in my setup.
Okay, it is defined to 0x20 but it is ignored by the core code. 

> Even then your generic usb_add_hcd shouldn't always set irqflag to
> IRQF_SHARED. 
Why not IRQF_SHARED? What is wrong with IRQF_SHARED? We determine the source
of the IRQ thanks to ehci spec.

> With irq chaining for remote wakeup (still this is wip
> for OMAP4), the irqflag should have IRQF_NO_SUSPEND set. We should
> have a way to set irqflag to different value and this value should be
> set based on the platform.

So you want a way to set IRQF_NO_SUSPEND for remote wakeup? I think this
could be arranged.

Sebastian
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