linux-kernel - Re: [PATCH 13/15] USB: ehci: make orion and mxc bus glues coexist

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Date:	Tue, 22 Jan 2013 22:00:27 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	Manjunath Goudar <manjunath.goudar@...aro.org>, balbi@...com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, Shawn Guo <shawn.guo@...aro.org>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Gregory Clement <gregory.clement@...e-electrons.com>
Subject: Re: [PATCH 13/15] USB: ehci: make orion and mxc bus glues coexist

On Tue, Jan 22, 2013 at 03:38:55PM +0000, Arnd Bergmann wrote:
> On Tuesday 22 January 2013, Alan Stern wrote:
> > In order to prevent this, you have to make sure that each glue driver
> > depends on USB_ARCH_HAS_EHCI.  A simple way to do this is to surround
> > the Kconfig entries for those drivers with "if USB && 
> > USB_ARCH_HAS_EHCI" ... "endif".
> 
> I was actually thinking we could remove the use of USB_ARCH_HAS_EHCI
> as well once we have inverted the logic for selecting USB_EHCI_HCD,
> but there is another problem with that, because then we still need
> something to select USB_ARCH_HAS_HCD, or kill that symbol as well.

+1 for killing it. Such symbols get more and more meaningless anyway
with multiarch kernels-

Sascha

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