linux-kernel - Re: [PATCH] Revert "brcmfmac: use ISO3166 country code and 0 rev as fallback"

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Message-ID: <20210927000828.GE9901@dragon>
Date:   Mon, 27 Sep 2021 08:08:29 +0800
From:   Shawn Guo <shawn.guo@...aro.org>
To:     Soeren Moch <smoch@....de>
Cc:     Kalle Valo <kvalo@...eaurora.org>, stable@...r.kernel.org,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@...ineon.com>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "brcmfmac: use ISO3166 country code and 0 rev as
 fallback"

On Sun, Sep 26, 2021 at 10:19:05PM +0200, Soeren Moch wrote:
> This reverts commit b0b524f079a23e440dd22b04e369368dde847533.
> 
> Commit b0b524f079a2 ("brcmfmac: use ISO3166 country code and 0 rev
> as fallback") changes country setup to directly use ISO3166 country
> codes if no more specific code is configured. This was done under
> the assumption that brcmfmac firmwares can handle such simple
> direct mapping from country codes to firmware ccode values.
> 
> Unfortunately this is not true for all chipset/firmware combinations.
> E.g. BCM4359/9 devices stop working as access point with this change,
> so revert the offending commit to avoid the regression.
> 
> Signed-off-by: Soeren Moch <smoch@....de>
> Cc: stable@...r.kernel.org  # 5.14.x

Acked-by: Shawn Guo <shawn.guo@...aro.org>