>-----Original Message-----
quoted text
>From: David Miller [mailto:davem@davemloft.net]
>Sent: Sunday, April 20, 2008 10:52 AM
>To: mingo@elte.hu
>Cc: linville@tuxdriver.com; Winkler, Tomas;
linux-kernel@vger.kernel.org;
quoted text
>kaber@trash.net; torvalds@linux-foundation.org;
akpm@linux-foundation.org;
quoted text
>netdev@vger.kernel.org; netfilter-devel@vger.kernel.org;
>mabbas@linux.intel.com; ischram@telenet.be; rjw@sisk.pl
>Subject: Re: [build bug] iwl-3945-led.c:(.text+0x119e36): undefined
>reference to `__led_classdev_unregister'
>
>From: Ingo Molnar <mingo@elte.hu>
>Date: Sun, 20 Apr 2008 09:34:41 +0200
>
>>  drivers/built-in.o: In function `iwl3945_led_unregister_led':
>>   iwl-3945-led.c:(.text+0x119e36): undefined reference to
>`__led_classdev_unregister'
>>  drivers/built-in.o: In function `iwl3945_led_register_led':
>>   iwl-3945-led.c:(.text+0x119ecd): undefined reference to
>`led_classdev_register'
>
>Thanks for the report.
>
>This is the classic "API_OPTION=m && API_USER=y" problem.
>
>In this case the best fix is probably to use select in the
>iwlwifi Kconfig files.  The following patch should cure it.
>
>iwlwifi: Use 'select' for MAC80211_LEDS and LEDS_CLASS instead of
'depends'
quoted text
>
>Signed-off-by: David S. Miller <davem@davemloft.net>
>
>diff --git a/drivers/net/wireless/iwlwifi/Kconfig
>b/drivers/net/wireless/iwlwifi/Kconfig
>index f844b73..c4e631d 100644
>--- a/drivers/net/wireless/iwlwifi/Kconfig
>+++ b/drivers/net/wireless/iwlwifi/Kconfig
>@@ -49,7 +49,9 @@ config IWL4965_HT
>
> config IWL4965_LEDS
> 	bool "Enable LEDS features in iwl4965 driver"
>-	depends on IWL4965 && MAC80211_LEDS && LEDS_CLASS
>+	depends on IWL4965
>+	select MAC80211_LEDS
>+	select LEDS_CLASS
> 	select IWLWIFI_LEDS
> 	---help---
> 	  This option enables LEDS for the iwlwifi drivers
>@@ -134,7 +136,9 @@ config IWL3945_SPECTRUM_MEASUREMENT
>
> config IWL3945_LEDS
> 	bool "Enable LEDS features in iwl3945 driver"
>-	depends on IWL3945 && MAC80211_LEDS && LEDS_CLASS
>+	depends on IWL3945
>+	select MAC80211_LEDS
>+	select LEDS_CLASS
> 	---help---
> 	  This option enables LEDS for the iwl3945 driver.
>

ACK
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