linux-kernel - Re: [PATCH v3 3/9] brcmfmac: firmware: Do not crash on a NULL board

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Message-ID: <5dca45ba-a8a9-7091-365b-7a73fdd3be26@gmail.com>
Date:   Thu, 20 Jan 2022 16:23:47 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Arend van Spriel <arend.vanspriel@...adcom.com>,
        Hector Martin <marcan@...can.st>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.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>
Cc:     Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com
Subject: Re: [PATCH v3 3/9] brcmfmac: firmware: Do not crash on a NULL
 board_type

20.01.2022 11:29, Arend van Spriel пишет:
> On 1/19/2022 11:02 PM, Dmitry Osipenko wrote:
>> 17.01.2022 17:29, Hector Martin пишет:
>>> This unbreaks support for USB devices, which do not have a board_type
>>> to create an alt_path out of and thus were running into a NULL
>>> dereference.
>>>
>>> Fixes: 5ff013914c62 ("brcmfmac: firmware: Allow per-board firmware
>>> binaries")
>>> Signed-off-by: Hector Martin <marcan@...can.st>
>>
>> Technically, all patches that are intended to be included into next
>> stable kernel update require the "Cc: stable@...r.kernel.org" tag.
> 
> Being the nit picker that I am I would say it is recommended to safe
> yourself extra work, not required, for the reason you give below.

Will be nice if stable tag could officially become a recommendation,
implying the stable tag. It's a requirement today, at least Greg KH
always demands to add it :)