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SubjectRe: [PATCH] [wireless-next] mt76: fix building without CONFIG_LEDS_CLASS
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On 2018-01-18 14:14, Arnd Bergmann wrote:
> When CONFIG_LEDS_CLASS is disabled, or it is a loadable module while
> mt76 is built-in, we run into a link error:
>
> drivers/net/wireless/mediatek/mt76/mac80211.o: In function `mt76_register_device':
> mac80211.c:(.text+0xb78): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `devm_of_led_classdev_register'
>
> We don't really need a hard dependency here as the driver can presumably
> work just fine without LEDs, so this follows the iwlwifi example and
> adds a separate Kconfig option for the LED support, this will be available
> whenever it will link, and otherwise the respective code gets left out from
> the driver object.
>
> Fixes: 17f1de56df05 ("mt76: add common code shared between multiple chipsets")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/net/wireless/mediatek/mt76/Kconfig | 5 +++++
> drivers/net/wireless/mediatek/mt76/mac80211.c | 8 +++++---
> drivers/net/wireless/mediatek/mt76/mt76x2_init.c | 6 ++++--
> 3 files changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/Kconfig b/drivers/net/wireless/mediatek/mt76/Kconfig
> index fc05d79c80d0..9d12c1f5284e 100644
> --- a/drivers/net/wireless/mediatek/mt76/Kconfig
> +++ b/drivers/net/wireless/mediatek/mt76/Kconfig
> @@ -8,3 +8,8 @@ config MT76x2E
> depends on PCI
> ---help---
> This adds support for MT7612/MT7602/MT7662-based wireless PCIe devices.
> +
> +config MT76_LEDS
> + bool "LED support for MT76"
> + depends on MT76_CORE
> + depends on LEDS_CLASS=y || MT76_CORE=LEDS_CLASS
I think this should have a 'default y'

- Felix

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