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SubjectRe: [PATCH v2] net: enable wireless core features with LEGACY_WEXT_ALLCONFIG
On Fri, Sep 06, 2019 at 12:24:00PM -0700, Mark Salyzyn wrote:
> In embedded environments the requirements are to be able to pick and
> chose which features one requires built into the kernel. If an
> embedded environment wants to supports loading modules that have been
> kbuilt out of tree, there is a need to enable hidden configurations
> for legacy wireless core features to provide the API surface for
> them to load.
>
> Introduce CONFIG_LEGACY_WEXT_ALLCONFIG to select all legacy wireless
> extension core features by activating in turn all the associated
> hidden configuration options, without having to specifically select
> any wireless module(s).
>
> Signed-off-by: Mark Salyzyn <salyzyn@android.com>
> Cc: kernel-team@android.com
> Cc: Johannes Berg <johannes@sipsolutions.net>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Marcel Holtmann <marcel@holtmann.org>
> Cc: linux-wireless@vger.kernel.org
> Cc: netdev@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: stable@vger.kernel.org # 4.19
> ---
> v2: change name and documentation to CONFIG_LEGACY_WEXT_ALLCONFIG
> ---
> net/wireless/Kconfig | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
> index 67f8360dfcee..0d646cf28de5 100644
> --- a/net/wireless/Kconfig
> +++ b/net/wireless/Kconfig
> @@ -17,6 +17,20 @@ config WEXT_SPY
> config WEXT_PRIV
> bool
>
> +config LEGACY_WEXT_ALLCONFIG
> + bool "allconfig for legacy wireless extensions"
> + select WIRELESS_EXT
> + select WEXT_CORE
> + select WEXT_PROC
> + select WEXT_SPY
> + select WEXT_PRIV
> + help
> + Config option used to enable all the legacy wireless extensions to
> + the core functionality used by add-in modules.
> +
> + If you are not building a kernel to be used for a variety of
> + out-of-kernel built wireless modules, say N here.
> +
> config CFG80211
> tristate "cfg80211 - wireless configuration API"
> depends on RFKILL || !RFKILL
> --
> 2.23.0.187.g17f5b7556c-goog
>

How is this patch applicable to stable kernels???

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