linux-kernel - Re: [PATCH 1/7] ACPICA: Only include ACPI asm files if ACPI is enabled

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Date:	Wed, 04 Jun 2014 14:35:33 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	wsa@...-dreams.de, grant.likely@...aro.org,
	linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
	linus.walleij@...aro.org, Lv Zheng <lv.zheng@...el.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	linux-acpi@...r.kernel.org, devel@...ica.org
Subject: Re: [PATCH 1/7] ACPICA: Only include ACPI asm files if ACPI is enabled

On Wednesday, June 04, 2014 01:09:50 PM Lee Jones wrote:
> Any drivers which support ACPI and Device Tree probing need to include
> both respective header files.  Without this patch, if a driver is being
> used on a platform which does not support ACPI and subsequently does not
> have the config option enabled, but includes linux/acpi.h the build
> breaks with:
> 
>   In file included from ../include/acpi/platform/acenv.h:150:0,
>                    from ../include/acpi/acpi.h:56,
>                    from ../include/linux/match.h:2,
>                    from ../drivers/i2c/i2c-core.c:43:
>   ../include/acpi/platform/aclinux.h:73:23:
>    fatal error: asm/acenv.h: No such file or directory
>    #include <asm/acenv.h>
>                        ^

Which kernel does this happen with?

> Cc: Lv Zheng <lv.zheng@...el.com>
> Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Cc: linux-acpi@...r.kernel.org
> Cc: devel@...ica.org
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
> ---
>  include/acpi/platform/aclinux.h | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
> index cd1f052..fdf7663 100644
> --- a/include/acpi/platform/aclinux.h
> +++ b/include/acpi/platform/aclinux.h
> @@ -70,9 +70,10 @@
>  #ifdef EXPORT_ACPI_INTERFACES
>  #include <linux/export.h>
>  #endif
> -#include <asm/acenv.h>
>  
> -#ifndef CONFIG_ACPI
> +#ifdef CONFIG_ACPI
> +#include <asm/acenv.h>
> +#else
>  
>  /* External globals for __KERNEL__, stubs is needed */
>  
> 

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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