linux-kernel - Re: [patch] sysfs: Fix build when sysfs is disabled

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Message-ID: <20130125204234.GA13245@kroah.com>
Date:	Fri, 25 Jan 2013 12:42:34 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Kristen C. Accardi" <kristen.c.accardi@...el.com>,
	Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch] sysfs: Fix build when sysfs is disabled

On Fri, Jan 25, 2013 at 12:13:59PM -0800, David Rientjes wrote:
> "sysfs: Functions for adding/removing symlinks to/from attribute groups" 
> causes a build failure when CONFIG_SYSFS is disabled:
> 
> drivers/acpi/power.c: In function 'acpi_power_hide_list':
> drivers/acpi/power.c:463: error: implicit declaration of function 'sysfs_remove_link_from_group'
> drivers/acpi/power.c: In function 'acpi_power_expose_list':
> drivers/acpi/power.c:486: error: implicit declaration of function 'sysfs_add_link_to_group'
> 
> We need to define empty functions for this config to avoid ifdefs in the 
> code.
> 
> Signed-off-by: David Rientjes <rientjes@...gle.com>
> ---
>  include/linux/sysfs.h | 12 ++++++++++++
>  1 file changed, 12 insertions(+)

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Rafael has to take this through his tree.

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