linux-kernel - [PATCH] wireless: carl9170: fix LEDS build errors & warnings

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Date:   Sat, 29 May 2021 00:15:23 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        kernel test robot <lkp@...el.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Christian Lamparter <chunkeey@...glemail.com>,
        linux-wireless@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH] wireless: carl9170: fix LEDS build errors & warnings

kernel test robot reports over 200 build errors and warnings
that are due to this Kconfig problem when CARL9170=m,
MAC80211=y, and LEDS_CLASS=m.

WARNING: unmet direct dependencies detected for MAC80211_LEDS
  Depends on [n]: NET [=y] && WIRELESS [=y] && MAC80211 [=y] && (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=MAC80211 [=y])
  Selected by [m]:
  - CARL9170_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_ATH [=y] && CARL9170 [=m]

CARL9170_LEDS selects MAC80211_LEDS even though its kconfig
dependencies are not met. This happens because 'select' does not follow
any Kconfig dependency chains.

Fix this by making the select depend on LEDS_CLASS=y or
LEDS_CLASS=MAC80211, just as this is done for ath9k.

Fixes: 1d7e1e6b1b8ed ("carl9170: Makefile, Kconfig files and MAINTAINERS")
Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Reported-by: kernel test robot <lkp@...el.com>
Cc: Kalle Valo <kvalo@...eaurora.org>
Cc: Christian Lamparter <chunkeey@...glemail.com>
Cc: linux-wireless@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/wireless/ath/carl9170/Kconfig |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- linux-next-20210528.orig/drivers/net/wireless/ath/carl9170/Kconfig
+++ linux-next-20210528/drivers/net/wireless/ath/carl9170/Kconfig
@@ -17,9 +17,7 @@ config CARL9170
 config CARL9170_LEDS
 	bool "SoftLED Support"
 	depends on CARL9170
-	select MAC80211_LEDS
-	select LEDS_CLASS
-	select NEW_LEDS
+	select MAC80211_LEDS if LEDS_CLASS=y || LEDS_CLASS=MAC80211
 	default y
 	help
 	  This option is necessary, if you want your device' LEDs to blink