netdev - Re: [build bug] drivers/built-in.o: In function `rt2x00leds_resume': : undefined reference to `led_classdev

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Date:	Fri, 25 Apr 2008 09:35:04 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	David Miller <davem@...emloft.net>
Cc:	linville@...driver.com, tomas.winkler@...el.com,
	linux-kernel@...r.kernel.org, kaber@...sh.net,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	mabbas@...ux.intel.com, ischram@...enet.be, rjw@...k.pl,
	ivdoorn@...il.com
Subject: Re: [build bug] drivers/built-in.o: In function
	`rt2x00leds_resume': : undefined reference to `led_classdev_resume'


* David Miller <davem@...emloft.net> wrote:

> Thanks for your report.
> 
> This is a similar case to the iwlwifi build failure you reported 
> earlier today (where the leds infrastructure knob is modular but the 
> driver using the interfaces is built-in).  Therefore, it likely should 
> use select too.
> 
> This should fix it:
> 
> rt2x00: Select LEDS_CLASS instead of using 'depends'.

hm, it seems there's still some small hole left in its Kconfig 
structure, overnight testing triggered this randconfig combination:

|  drivers/built-in.o: In function `rt2x00leds_resume':
|  : undefined reference to `led_classdev_resume'
|  drivers/built-in.o: In function `rt2x00leds_resume':
|  : undefined reference to `led_classdev_resume'
|
|  http://redhat.com/~mingo/misc/config-Fri_Apr_25_08_50_47_CEST_2008.bad

... no biggie though, the usual distro configs build fine. I've 
reinstated the quick hack below.

btw., for some reason LEDS was a source of various build problems in the 
past too - we fought with it in the x86 tree as well in .25. It seems to 
have problems much more so than other config options that get select-ed. 
Perhaps there's something particularly fragile about LEDS?

	Ingo

-------------->
Subject: rt2x00: turn off temporarily
From: Ingo Molnar <mingo@...e.hu>
Date: Sun Apr 20 10:18:45 CEST 2008

NOT-Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 drivers/net/wireless/rt2x00/Kconfig |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux/drivers/net/wireless/rt2x00/Kconfig
===================================================================
--- linux.orig/drivers/net/wireless/rt2x00/Kconfig
+++ linux/drivers/net/wireless/rt2x00/Kconfig
@@ -62,6 +62,7 @@ config RT2400PCI_LEDS
 	bool "RT2400 leds support"
 	depends on RT2400PCI
 	select LEDS_CLASS
+	depends on 0
 	select RT2X00_LIB_LEDS
 	---help---
 	  This adds support for led triggers provided my mac80211.
@@ -89,6 +90,7 @@ config RT2500PCI_LEDS
 	bool "RT2500 leds support"
 	depends on RT2500PCI
 	select LEDS_CLASS
+	depends on 0
 	select RT2X00_LIB_LEDS
 	---help---
 	  This adds support for led triggers provided my mac80211.
@@ -118,6 +120,7 @@ config RT61PCI_LEDS
 	bool "RT61 leds support"
 	depends on RT61PCI
 	select LEDS_CLASS
+	depends on 0
 	select RT2X00_LIB_LEDS
 	---help---
 	  This adds support for led triggers provided my mac80211.
@@ -154,6 +157,7 @@ config RT73USB_LEDS
 	bool "RT73 leds support"
 	depends on RT73USB
 	select LEDS_CLASS
+	depends on 0
 	select RT2X00_LIB_LEDS
 	---help---
 	  This adds support for led triggers provided my mac80211.
--
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