linux-kernel - RE: [PATCH] SFI: fix compilation warnings

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Message-ID: <1AE640813FDE7649BE1B193DEA596E8802494B32@SHSMSX101.ccr.corp.intel.com>
Date:	Fri, 6 Dec 2013 01:08:45 +0000
From:	"Zheng, Lv" <lv.zheng@...el.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC:	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] SFI: fix compilation warnings

> From: Rafael J. Wysocki [mailto:rjw@...ysocki.net]
> Sent: Friday, December 06, 2013 6:37 AM
> 
> On Thursday, December 05, 2013 07:26:37 PM Andy Shevchenko wrote:
> > When build kernel with make W=1 we get the following compiler error.
> >
> > In file included from drivers/sfi/sfi_acpi.c:66:0:
> > include/linux/sfi_acpi.h: In function ‘acpi_sfi_table_parse’:
> > include/linux/sfi_acpi.h:72:2: error: implicit declaration of function ‘acpi_table_parse’ [-Werror=implicit-function-declaration]
> >   if (!acpi_table_parse(signature, handler))
> >   ^
> >   cc1: some warnings being treated as errors
> >
> > The patch changes acpi/acpi.h inclusion to linux/acpi.h.
> >
> > Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> 
> OK
> 
> Lv, I'm dropping your patch cleaning up the inclusions, please sort that thing
> out entirely for the next cycle.

No, I think Andy's patch is wrong.
This warning is existing before merging my fixes.

Either we fix this warning or leave it as is.

To fix it, you need to add 1 line in sfi_acpi.h rather than change the line.
Let me post a fix for this.

Thanks
-Lv

> 
> Thanks!
> 
> > ---
> >  drivers/sfi/sfi_acpi.c   | 2 +-
> >  include/linux/sfi_acpi.h | 2 +-
> >  2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/sfi/sfi_acpi.c b/drivers/sfi/sfi_acpi.c
> > index 0c9f419..d4dfcbe 100644
> > --- a/drivers/sfi/sfi_acpi.c
> > +++ b/drivers/sfi/sfi_acpi.c
> > @@ -60,7 +60,7 @@
> >  #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
> >
> >  #include <linux/kernel.h>
> > -#include <acpi/acpi.h>	/* FIXME: inclusion should be removed */
> > +#include <linux/acpi.h>
> >
> >  #include <linux/sfi.h>
> >  #include <linux/sfi_acpi.h>
> > diff --git a/include/linux/sfi_acpi.h b/include/linux/sfi_acpi.h
> > index 2cfcb79..c9cab82 100644
> > --- a/include/linux/sfi_acpi.h
> > +++ b/include/linux/sfi_acpi.h
> > @@ -60,7 +60,7 @@
> >  #define _LINUX_SFI_ACPI_H
> >
> >  #ifdef CONFIG_SFI
> > -#include <acpi/acpi.h>	/* FIXME: inclusion should be removed */
> > +#include <linux/acpi.h>
> >
> >  extern int sfi_acpi_table_parse(char *signature, char *oem_id,
> >  				char *oem_table_id,
> >
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.