linux-kernel - RE: [PATCH] ipmi: add of_device_id in MODULE_DEVICE

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Message-ID: <D506FF644BBE48498B87295D58C770F820EBC8D6@satlexdag03.amd.com>
Date:	Tue, 25 Aug 2015 14:50:42 +0000
From:	"Singh, Brijeshkumar" <Brijeshkumar.Singh@....com>
To:	"minyard@....org" <minyard@....org>,
	"openipmi-developer@...ts.sourceforge.net" 
	<openipmi-developer@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] ipmi: add of_device_id in MODULE_DEVICE_TABLE

Hi Corey,

Just tried the patch on 4.2-rc8 and it seem to build just fine

* make x86_64_defconfig + enable IPMI module as "m"   - Build OK
* make allyesconfig - Build OK
* make allmodconfig - Build OK

Please let me know if  I am missing something otherwise send me your config and will try to root cause the issue. 
Optionally, if you are okay then I can guard  MODULE_DEVICE_TABLE(of, ipmi_match) changes with #if CONFIG_OF to ensure that code does not get build for non device-tree platform.

-Brijesh 

> -----Original Message-----
> From: Corey Minyard [mailto:tcminyard@...il.com] On Behalf Of Corey
> Minyard
> Sent: Monday, August 24, 2015 7:49 PM
> To: Singh, Brijeshkumar; openipmi-developer@...ts.sourceforge.net; linux-
> kernel@...r.kernel.org
> Subject: Re: [PATCH] ipmi: add of_device_id in MODULE_DEVICE_TABLE
> 
> Well, I should have compile tested first.  On x86_64:
> 
> 
>   CC [M]  drivers/char/ipmi/ipmi_si_intf.o In file included from
> ../drivers/char/ipmi/ipmi_si_intf.c:42:0:
> ../drivers/char/ipmi/ipmi_si_intf.c:2804:25: error: 'ipmi_match'
> undeclared here (not in a function)
>  MODULE_DEVICE_TABLE(of, ipmi_match);
>                          ^
> ../include/linux/module.h:223:21: note: in definition of macro
> 'MODULE_DEVICE_TABLE'
>  extern const typeof(name) __mod_##type##__##name##_device_table  \
>                      ^
> ../include/linux/module.h:223:27: error:
> '__mod_of__ipmi_match_device_table' aliased to undefined symbol
> 'ipmi_match'
>  extern const typeof(name) __mod_##type##__##name##_device_table  \
>                            ^
> ../drivers/char/ipmi/ipmi_si_intf.c:2804:1: note: in expansion of macro
> 'MODULE_DEVICE_TABLE'
>  MODULE_DEVICE_TABLE(of, ipmi_match);
> 
> 
> This has to compile on all arches.  I'm not sure what is wrong, but I've removed
> the patch.
> 
> -corey
> 
> On 08/24/2015 09:15 AM, Brijesh Singh wrote:
> > Fix autoloading ipmi modules when using device tree.
> >
> > Signed-off-by: Brijesh Singh <brijeshkumar.singh@....com>
> > ---
> >  drivers/char/ipmi/ipmi_si_intf.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/char/ipmi/ipmi_si_intf.c
> > b/drivers/char/ipmi/ipmi_si_intf.c
> > index 8a45e92..cddc7b0 100644
> > --- a/drivers/char/ipmi/ipmi_si_intf.c
> > +++ b/drivers/char/ipmi/ipmi_si_intf.c
> > @@ -2785,6 +2785,7 @@ static struct platform_driver ipmi_driver = {
> >  	.probe		= ipmi_probe,
> >  	.remove		= ipmi_remove,
> >  };
> > +MODULE_DEVICE_TABLE(of, ipmi_match);
> >
> >  #ifdef CONFIG_PARISC
> >  static int ipmi_parisc_probe(struct parisc_device *dev)

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