linux-kernel - Re: [PATCH v3 06/20] usb: host: xhci-plat: Add support for the Armada 38x

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Date:	Tue, 06 May 2014 14:21:55 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Lior Amsalem <alior@...vell.com>, Andrew Lunn <andrew@...n.ch>,
	linux-usb@...r.kernel.org, Jason Cooper <jason@...edaemon.net>,
	Mathias Nyman <mathias.nyman@...el.com>,
	devicetree@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	linux-kernel@...r.kernel.org, Felipe Balbi <balbi@...com>,
	Nadav Haklai <nadavh@...vell.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Rob Herring <robh+dt@...nel.org>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Grant Likely <grant.likely@...aro.org>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH v3 06/20] usb: host: xhci-plat: Add support for the Armada 38x

On Tuesday 06 May 2014 14:10:23 Thomas Petazzoni wrote:
> On Tue, 06 May 2014 13:57:44 +0200, Arnd Bergmann wrote:
> 
> > > Please limit this driver to mvebu arch and compile testing, i.e.
> > > 
> > >         depends on ARCH_MVEBU || COMPILE_TEST
> > 
> > I think it actually needs a dependency on MVEBU_MBUS.
> 
> That's not what we do for any of the other drivers that use the
> MVEBU_MBUS functions.

Fair enough. I guess using ARCH_MVEBU as the dependency works as well
because it implies MVEBU_MBUS. However, you can't use COMPILE_TEST
then because the driver itself needs the interfaces provided by MBUS.

It could be

	depends on ARCH_MVEBU || (MVEBU_MBUS && COMPILE_TEST)

to describe the dependency most accurately.

> > You probably need something like
> > 
> >       depends on MVEBU_MBUS=y || (MVEBU_MBUS=m && USB_XHCI=m)
> 
> MVEBU_MBUS is a bool, so there is no way is can be =m.

Yes, that helps.

	Arnd
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