linux-kernel - Re: [PATCH] wireless: make WEXT_SPY and WEXT_PRIV select WEXT

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Date:	Wed, 7 Oct 2009 17:12:35 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	"John W. Linville" <linville@...driver.com>,
	linux-wireless@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] wireless: make WEXT_SPY and WEXT_PRIV select WEXT_CORE

On Thu, 08 Oct 2009 01:14:16 +0200 Johannes Berg wrote:

> On Wed, 2009-10-07 at 15:54 -0700, Randy Dunlap wrote:
> 
> > > But they also select WIRELESS_EXT, which should cause WEXT_CORE to be
> > > turned on. Is it possible that is failing?
> > 
> > # CONFIG_WIRELESS is not set
> > CONFIG_WIRELESS_EXT=y
> > CONFIG_WEXT_SPY=y
> > CONFIG_WEXT_PRIV=y
> > 
> > WEXT_CORE is not enabled.  I haven't found the culprit, but I suspect "select".
> 
> Interesting.
> 
> > but what in WIRELESS_EXT would also cause WEXT_CORE to be enabled?
> 
> Well, the way WEXT_CORE is defined as def_bool y ought to, no?

Ah, I see what you mean.

Here's what's happening:

net/wireless/Kconfig says:

config WEXT_CORE
	def_bool y
	depends on CFG80211_WEXT || WIRELESS_EXT


and net/Kconfig says:

if WIRELESS

source "net/wireless/Kconfig"
source "net/mac80211/Kconfig"

endif # WIRELESS


so WEXT_CORE actually depends on NET && WIRELESS && (CFG80211_WEXT || WIRELESS_EXT)
(that's what xconfig shows me).
But WIRELESS is not enabled.  Pooh.

I was already toying with making CONFIG_WIRELESS a real/usable kconfig symbol.
That may have to be done unless someone else comes up with another solution.

---
~Randy
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