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Re: [PATCH v3] wireless: carl9170: fix LEDS build errors & warnings

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On 30/05/2021 05:11, Randy Dunlap wrote:
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 CARL9170_LEDS depend on MAC80211_LEDS, where
the latter supplies any needed dependencies on LEDS_CLASS.

Ok, this is not what I was expecting... I though you would just
add a "depends on / imply MAC80211_LEDS" on your v2. (this was
based on the assumption of what mac80211,  ath9k/_htc and mt76
solutions of the same problem looked like).

But since (I assuming here) this patch passed the build-bots
testing with flying colors in the different config permutations.

Acked-by: Christian Lamparter <chunkeey@xxxxxxxxx>

Fixes: 1d7e1e6b1b8ed ("carl9170: Makefile, Kconfig files and MAINTAINERS")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: Christian Lamparter <chunkeey@xxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Suggested-by: Christian Lamparter <chunkeey@xxxxxxxxx>
---
v2: modify as suggesed by Arnd
v3: modify as suggested by Christian

  drivers/net/wireless/ath/carl9170/Kconfig |    8 +++-----
  1 file changed, 3 insertions(+), 5 deletions(-)

--- linux-next-20210528.orig/drivers/net/wireless/ath/carl9170/Kconfig
+++ linux-next-20210528/drivers/net/wireless/ath/carl9170/Kconfig
@@ -16,13 +16,11 @@ config CARL9170
config CARL9170_LEDS
  	bool "SoftLED Support"
-	depends on CARL9170
-	select MAC80211_LEDS
-	select LEDS_CLASS
-	select NEW_LEDS
  	default y
+	depends on CARL9170
+	depends on MAC80211_LEDS
  	help
-	  This option is necessary, if you want your device' LEDs to blink
+	  This option is necessary, if you want your device's LEDs to blink.
Say Y, unless you need the LEDs for firmware debugging.




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