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Message-ID: <CAJKOXPdj9QH13nD14wQUZBt8iGRmrAWEgHH4LNjz11+b8Ydu1Q@mail.gmail.com>
Date:	Mon, 11 May 2015 21:37:05 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Michal Suchanek <hramrach@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene@...nel.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Lukasz Majewski <l.majewski@...sung.com>,
	Andreas Faerber <afaerber@...e.de>,
	Sachin Kamat <sachin.kamat@...sung.com>,
	Sjoerd Simons <sjoerd.simons@...labora.co.uk>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: exynos_defconfig: add options to make wifi usable

2015-05-11 19:22 GMT+09:00 Michal Suchanek <hramrach@...il.com>:
>
> The Exynos defconfig includes mwifiex sdio support which is present on
> some of the Exynos boards.
>
> For the WiFi to be usable two extra options are needed. Usermode
> firmware helper to load out-of-kernel firmware and wireless extensions
> so the interface can be configured with wireless-tools.
>
> Signed-off-by: Michal Suchanek <hramrach@...il.com>
> ---
>  arch/arm/configs/exynos_defconfig | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/configs/exynos_defconfig b/arch/arm/configs/exynos_defconfig
> index d034c96..5d4ee83f 100644
> --- a/arch/arm/configs/exynos_defconfig
> +++ b/arch/arm/configs/exynos_defconfig
> @@ -42,6 +42,7 @@ CONFIG_IP_PNP_BOOTP=y
>  CONFIG_IP_PNP_RARP=y
>  CONFIG_WIRELESS=y
>  CONFIG_CFG80211=y
> +CONFIG_CFG80211_WEXT=y

Hi,

No, the CFG80211_WEXT is the old interface. I think there were some
plans to mark it deprecated. Anyway it should not be enabled by
default and almost none of configs enable it.

>  CONFIG_MWIFIEX=y
>  CONFIG_MWIFIEX_SDIO=y
>  CONFIG_RFKILL_REGULATOR=y
> @@ -49,6 +50,7 @@ CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
>  CONFIG_DEVTMPFS=y
>  CONFIG_DEVTMPFS_MOUNT=y
>  CONFIG_PROC_DEVICETREE=y
> +CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y

It is an fallback, not usual way of loading firmware. In typical cases
this should not be needed. Why Exynos defconfig should be exceptional
here?

Best regards,
Krzysztof
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