linux-kernel - Re: [PATCH 1/2] gpio: move those interface depends on GPIOLIB into proper section

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Message-ID: <20121031071923.GE29509@yliu-dev.sh.intel.com>
Date:	Wed, 31 Oct 2012 15:19:23 +0800
From:	Yuanhan Liu <yuanhan.liu@...ux.intel.com>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	linux-kernel@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 1/2] gpio: move those interface depends on GPIOLIB into
 proper section

On Wed, Oct 31, 2012 at 03:12:36PM +0800, Fengguang Wu wrote:
> On Wed, Oct 31, 2012 at 03:00:54PM +0800, Yuanhan Liu wrote:
> > There are 2 issues with current code:
> > 
> > 1. redefinition of 'gpio_cansleep':
> > include/linux/gpio.h:60:19: error: redefinition of 'gpio_cansleep'
> > include/asm-generic/gpio.h:212:19: note: previous definition of 'gpio_cansleep' was here
> > 
> > The root cause is include/linux/gpio.h has a defintion of it. And if
> > CONFIG_GPIOLIB is not set, include/asm-generic/gpio.h has another
> > definition.
> > 
> > 2. include/linux/gpio.h:62:2: error: implicit declaration of function '__gpio_cansleep'
> > 
> > Only happens when CONFIG_GPIOLIB is not set, too. Since it called
> > gpiolib functions without putting something like: #ifdef CONFIG_GPIOLIB
> > 
> > So, move those functions into proper section at
> > include/asm-generic/gpio.h would resolve 2 above issues.
> 
> The patch introduces new build errors:

Ooops. I checked the log at build server and posted it after finding no
errors. Seems that the test hasn't been finished?

Sorry for the nosiy. Will send v2 then.

Thanks!

> 
> yuanhan:gpio-fixes [2/2] db1a5a0 blackfin-BF526-EZBRD_defconfig
> 
> [error]
> arch/blackfin/include/asm/gpio.h:197:19: error: redefinition of 'gpio_get_value'
> arch/blackfin/include/asm/gpio.h:205:20: error: redefinition of 'gpio_set_value'
> arch/blackfin/include/asm/gpio.h:213:19: error: redefinition of 'gpio_cansleep'
> arch/blackfin/include/asm/gpio.h:218:19: error: redefinition of 'gpio_to_irq'
> 
> yuanhan:gpio-fixes [2/2] db1a5a0 blackfin-TCM-BF537_defconfig
> 
> [error]
> include/asm-generic/gpio.h:225:19: error: redefinition of 'gpio_get_value'
> include/asm-generic/gpio.h:231:20: error: redefinition of 'gpio_set_value'
> include/asm-generic/gpio.h:242:19: error: redefinition of 'gpio_to_irq'
> 
> yuanhan:gpio-fixes [2/2] db1a5a0 sh-rsk7269_defconfig
> 
> [error]
> arch/sh/include/asm/gpio.h:27:19: error: redefinition of 'gpio_get_value'
> arch/sh/include/asm/gpio.h:32:20: error: redefinition of 'gpio_set_value'
> arch/sh/include/asm/gpio.h:37:19: error: redefinition of 'gpio_cansleep'
> arch/sh/include/asm/gpio.h:42:19: error: redefinition of 'gpio_to_irq'
> 
> yuanhan:gpio-fixes [2/2] db1a5a0 avr32-atngw100_defconfig
> 
> [error]
> arch/avr32/mach-at32ap/include/mach/gpio.h:18: error: redefinition of 'gpio_get_value'
> include/asm-generic/gpio.h:203: error: previous definition of 'gpio_get_value' was here
> arch/avr32/mach-at32ap/include/mach/gpio.h:23: error: redefinition of 'gpio_set_value'
> include/asm-generic/gpio.h:208: error: previous definition of 'gpio_set_value' was here
> arch/avr32/mach-at32ap/include/mach/gpio.h:28: error: redefinition of 'gpio_cansleep'
> include/asm-generic/gpio.h:213: error: previous definition of 'gpio_cansleep' was here
> arch/avr32/mach-at32ap/include/mach/gpio.h:34: error: redefinition of 'gpio_to_irq'
> include/asm-generic/gpio.h:218: error: previous definition of 'gpio_to_irq' was here
> 
> Thanks,
> Fengguang
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