linux-kernel - Re: [PATCH v2] net: rfkill: add generic gpio rfkill driver

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Message-ID: <20110513201130.GA10403@tuxdriver.com>
Date:	Fri, 13 May 2011 16:11:31 -0400
From:	"John W. Linville" <linville@...driver.com>
To:	Rhyland Klein <rklein@...dia.com>
Cc:	"olof@...om.net" <olof@...om.net>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Johannes Berg <johannes@...solutions.net>
Subject: Re: [PATCH v2] net: rfkill: add generic gpio rfkill driver

On Fri, May 13, 2011 at 03:20:20PM -0400, John W. Linville wrote:
> On Fri, May 13, 2011 at 12:02:54PM -0700, Rhyland Klein wrote:
> > On Fri, 2011-05-13 at 00:15 -0700, Johannes Berg wrote:
> > > On Thu, 2011-05-12 at 14:23 -0700, Rhyland Klein wrote:
> > > > On Thu, 2011-05-12 at 12:02 -0700, Johannes Berg wrote:
> > > > > On Thu, 2011-05-12 at 11:52 -0700, Rhyland Klein wrote:
> > > > > 
> > > > > > > If, on the other hand, rfkill decides that at the time of loading the
> > > > > > > driver wifi should be on, then the first change would be +1 and it'll
> > > > > > > flip between 0 and +1.
> > > > > > > 
> > > > > > > This seems like it'll cause issues at some point, so I think you should
> > > > > > > either allow the driver to set the initial state or hardcode one of
> > > > > > > these possibilities (so at least it's predictable)
> > > > > 
> > > > > > I won't go negative, if you look, it only will disable clock if it knows
> > > > > > it has already enabled it. 
> > > > > 
> > > > > Ah, you're right, I misread the macros.
> > > 
> > > > So the patch is good as is?
> > > 
> > > I think so, yes.
> > > 
> > > johannes
> > > 
> > 
> > John, Johannes suggested you are able to pull in this patch?
> 
> I've got it, thanks.

  Building modules, stage 2.
  MODPOST 2346 modules
ERROR: "clk_get" [net/rfkill/rfkill-gpio.ko] undefined!
ERROR: "clk_enable" [net/rfkill/rfkill-gpio.ko] undefined!
ERROR: "clk_put" [net/rfkill/rfkill-gpio.ko] undefined!
ERROR: "clk_disable" [net/rfkill/rfkill-gpio.ko] undefined!
WARNING: modpost: Found 5 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

Is there something we should add to Kconfig to prevent this?

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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