linux-kernel - Re: [2.6 patch] FW_LOADER should select HOTPLUG

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Message-ID: <20061203081552.GC11084@stusta.de>
Date:	Sun, 3 Dec 2006 09:15:52 +0100
From:	Adrian Bunk <bunk@...sta.de>
To:	Andrew Morton <akpm@...l.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] FW_LOADER should select HOTPLUG

On Sun, Dec 03, 2006 at 12:58:24AM -0800, Andrew Morton wrote:
> On Sun, 3 Dec 2006 08:16:37 +0100
> Adrian Bunk <bunk@...sta.de> wrote:
> 
> > Since FW_LOADER is an option that is always select'ed by the code using 
> > it, it mustn't depend on HOTPLUG.
> > 
> > It's only relevant in the EMBEDDED=y case, but this might have resulted 
> > in illegal FW_LOADER=, HOTPLUG=n configurations.
> > 
> > Signed-off-by: Adrian Bunk <bunk@...sta.de>
> > 
> > --- linux-2.6.19-rc6-mm2/drivers/base/Kconfig.old	2006-12-02 20:36:49.000000000 +0100
> > +++ linux-2.6.19-rc6-mm2/drivers/base/Kconfig	2006-12-02 20:37:03.000000000 +0100
> > @@ -19,8 +19,8 @@
> >  	  If unsure say Y here.
> >  
> >  config FW_LOADER
> > -	tristate "Userspace firmware loading support"
> > -	depends on HOTPLUG
> > +	tristate
> > +	select HOTPLUG
> 
> It would be a retrograde step to start selecting HOTPLUG - we've managed to
> avoid it thus far.

$ grep -r "select HOTPLUG" * | wc -l
4
$ 

> It'd be better to make those drivers which select FW_LOADER dependent upon
> HOTPLUG.

$ grep -r "select FW_LOADER" * | wc -l
71
$ 

And since the only case where depends<->select makes a difference is 
CONFIG_EMBEDDED=y, people will always continue to forget the dependency 
on HOTPLUG when select'ing FW_LOADER.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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