| Message ID | 20210624100823.854-1-liwei.song@windriver.com |
|---|---|
| State | New |
| Headers | show |
| Series | iwlwifi: select MAC80211_LEDS conditionally | expand |
Hi, Any suggestion about this patch? Thanks, Liwei. On 6/24/21 19:06, Liwei Song wrote: > > > On 6/24/21 18:41, Kalle Valo wrote: >> Liwei Song <liwei.song@windriver.com> writes: >> >>> MAC80211_LEDS depends on LEDS_CLASS=y or LEDS_CLASS=MAC80211, >>> add condition to enable it in iwlwifi/Kconfig to avoid below >>> compile warning when LEDS_CLASS was set to 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]: >>> - IWLWIFI_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_INTEL [=y] && IWLWIFI [=m] && (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=IWLWIFI [=m]) && (IWLMVM [=m] || IWLDVM [=m]) >>> >>> Signed-off-by: Liwei Song <liwei.song@windriver.com> >> >> Is this is a new regression or an old bug? What commit caused this? > > It should be exist when the below commit change the dependency of MAC80211_LEDS > to fix some build error: > > commit b64acb28da8394485f0762e657470c9fc33aca4d > Author: Arnd Bergmann <arnd@arndb.de> > Date: Mon Jan 25 12:36:42 2021 +0100 > > ath9k: fix build error with LEDS_CLASS=m > > When CONFIG_ATH9K is built-in but LED support is in a loadable > module, both ath9k drivers fails to link: > > x86_64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `ath_deinit_leds': > gpio.c:(.text+0x36): undefined reference to `led_classdev_unregister' > x86_64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `ath_init_leds': > gpio.c:(.text+0x179): undefined reference to `led_classdev_register_ext' > > The problem is that the 'imply' keyword does not enforce any dependency > but is only a weak hint to Kconfig to enable another symbol from a > defconfig file. > > Change imply to a 'depends on LEDS_CLASS' that prevents the incorrect > configuration but still allows building the driver without LED support. > > The 'select MAC80211_LEDS' is now ensures that the LED support is > actually used if it is present, and the added Kconfig dependency > on MAC80211_LEDS ensures that it cannot be enabled manually when it > has no effect. > > Fixes: 197f466e93f5 ("ath9k_htc: Do not select MAC80211_LEDS by default") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Johannes Berg <johannes@sipsolutions.net> > Signed-off-by: Kalle Valo <kvalo@codeaurora.org> > Link: https://lore.kernel.org/r/20210125113654.2408057-1-arnd@kernel.org > > diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig > index cd9a9bd242ba..51ec8256b7fa 100644 > --- a/net/mac80211/Kconfig > +++ b/net/mac80211/Kconfig > @@ -69,7 +69,7 @@ config MAC80211_MESH > config MAC80211_LEDS > bool "Enable LED triggers" > depends on MAC80211 > - depends on LEDS_CLASS > + depends on LEDS_CLASS=y || LEDS_CLASS=MAC80211 > > > Thanks, > Liwei. > > >>
Liwei Song <liwei.song@windriver.com> writes: > On 6/24/21 18:41, Kalle Valo wrote: >> Liwei Song <liwei.song@windriver.com> writes: >> >>> MAC80211_LEDS depends on LEDS_CLASS=y or LEDS_CLASS=MAC80211, >>> add condition to enable it in iwlwifi/Kconfig to avoid below >>> compile warning when LEDS_CLASS was set to 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]: >>> - IWLWIFI_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] && >>> WLAN_VENDOR_INTEL [=y] && IWLWIFI [=m] && (LEDS_CLASS [=m]=y || >>> LEDS_CLASS [=m]=IWLWIFI [=m]) && (IWLMVM [=m] || IWLDVM [=m]) >>> >>> Signed-off-by: Liwei Song <liwei.song@windriver.com> >> >> Is this is a new regression or an old bug? What commit caused this? > > It should be exist when the below commit change the dependency of MAC80211_LEDS > to fix some build error: > > commit b64acb28da8394485f0762e657470c9fc33aca4d > Author: Arnd Bergmann <arnd@arndb.de> > Date: Mon Jan 25 12:36:42 2021 +0100 > > ath9k: fix build error with LEDS_CLASS=m Thanks, it seems LEDS_CLASS is a constant source of problems for wireless drivers :/ Luca, what should we do? We cannot have compile errors in the tree. I assigned this patch to me on patchwork. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
diff --git a/drivers/net/wireless/intel/iwlwifi/Kconfig b/drivers/net/wireless/intel/iwlwifi/Kconfig index 1085afbefba8..0e1de69c259f 100644 --- a/drivers/net/wireless/intel/iwlwifi/Kconfig +++ b/drivers/net/wireless/intel/iwlwifi/Kconfig @@ -50,7 +50,7 @@ config IWLWIFI_LEDS depends on LEDS_CLASS=y || LEDS_CLASS=IWLWIFI depends on IWLMVM || IWLDVM select LEDS_TRIGGERS - select MAC80211_LEDS + select MAC80211_LEDS if (LEDS_CLASS=y || LEDS_CLASS=MAC80211) default y config IWLDVM
MAC80211_LEDS depends on LEDS_CLASS=y or LEDS_CLASS=MAC80211, add condition to enable it in iwlwifi/Kconfig to avoid below compile warning when LEDS_CLASS was set to 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]: - IWLWIFI_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_INTEL [=y] && IWLWIFI [=m] && (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=IWLWIFI [=m]) && (IWLMVM [=m] || IWLDVM [=m]) Signed-off-by: Liwei Song <liwei.song@windriver.com> --- drivers/net/wireless/intel/iwlwifi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)