linux-kernel - Re: [PATCH, RFC 2/2] USB: host: make USB_ARCH_HAS

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Date:	Tue, 4 Jun 2013 19:40:00 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	linux-usb@...r.kernel.org,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH, RFC 2/2] USB: host: make USB_ARCH_HAS_?HCI obsolete

On Tuesday 04 June 2013, Alan Stern wrote:
> On Tue, 4 Jun 2013, Arnd Bergmann wrote:
> > so that would create a circular dependency unless we change all of them
> > at once. I did that when creating this patch, but then decided to
> > revert it for now and do smaller steps.
> 
> Okay.  Changing those 24 should be the next step.

Yes, and we can remove the various 'select USB_ARCH_HAS_*' from arch
code at the same time. Since there is no hurry, I would suggest doing
that after 3.11-rc1 so we don't have to worry about dependencies.
 
> > We could do
> > 
> > config USB_ARCH_HAS_HCD
> > 	def_bool USB_SUPPORT
> > 
> > or
> > 
> > config USB_ARCH_HAS_HCD
> > 	def_bool y
> > 
> > which would both have the exact same behavior as 'def_bool HAS_IOMEM'.
> 
> I'm in favor of "def_bool y".

Ok. And I'll use 'bool' for the 'USB_ARCH_HAS_?HCI' symbols since we
don't care about the value any more.

	Arnd
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