linux-kernel - Re: [PATCH] gpio: dwapb: enable for ARC

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Date:	Thu, 09 Apr 2015 12:31:37 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Alexey Brodkin <Alexey.Brodkin@...opsys.com>,
	Steven Miao <realmz6@...il.com>,
	adi-buildroot-devel@...ts.sourceforge.net,
	Sonic Zhang <sonic.zhang@...log.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Vineet.Gupta1@...opsys.com" <Vineet.Gupta1@...opsys.com>,
	"andriy.shevchenko@...ux.intel.com" 
	<andriy.shevchenko@...ux.intel.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH] gpio: dwapb: enable for ARC

On Thursday 09 April 2015 10:29:59 Linus Walleij wrote:
> >
> > make.cross ARCH=blackfin
> > drivers/gpio/gpio-dwapb.c: In function 'dwapb_irq_handler':
> > drivers/gpio/gpio-dwapb.c:91:2: error: implicit declaration of function
> > 'readl_relaxed' [-Werror=implicit-function-declaration]
> > drivers/gpio/gpio-dwapb.c: In function 'dwapb_configure_irqs':
> > drivers/gpio/gpio-dwapb.c:212:32: error: 'struct gpio_chip' has no
> > member named 'of_node'
> > drivers/gpio/gpio-dwapb.c:221:16: error: 'struct gpio_chip' has no
> > member named 'of_node'
> > drivers/gpio/gpio-dwapb.c: In function 'dwapb_gpio_add_port':
> > drivers/gpio/gpio-dwapb.c:331:14: error: 'struct gpio_chip' has no
> > member named 'of_node'
> > cc1: some warnings being treated as errors
> > --->8---
> >
> > Probably better fix is to make dwgpio depend on !BLACKFIN because we
> > know it won't be built for it. If there're other arches that don't
> > define [readl|writel]_relaxed() we may add them as well.
> 
> This restrictions should be gone after commit
> 9439eb3ab9d1ece6e4ad7baaa4a7f534f9b9dab0
> "asm-generic: io: implement relaxed accessor macros as conditional wrappers"
> 
> I will make a patch removing the dependencies and see what happens.

Yes, makes sense. I think we don't need anything other than

	depends on OF_GPIO || X86_INTEL_QUARK

	Arnd
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