linux-kernel - Re: [PATCH v3 2/9] brcmfmac: firmware: Allocate space for default boardrev in nvram

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Message-ID: <CAHp75VdZG4n1QySXyM+w1gJOWzq5Ng-Ym8dL1sSC_MLP2hqxAw@mail.gmail.com>
Date:   Wed, 19 Jan 2022 23:35:44 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Hector Martin <marcan@...can.st>
Cc:     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>,
        Dmitry Osipenko <digetx@...il.com>,
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        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
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Subject: Re: [PATCH v3 2/9] brcmfmac: firmware: Allocate space for default
 boardrev in nvram

On Mon, Jan 17, 2022 at 4:30 PM Hector Martin <marcan@...can.st> wrote:
>
> If boardrev is missing from the NVRAM we add a default one, but this
> might need more space in the output buffer than was allocated. Ensure
> we have enough padding for this in the buffer.

Do you know this ahead (before allocation happens)?
If yes, the size change should happen conditionally.

Alternatively, krealloc() may be used.

-- 
With Best Regards,
Andy Shevchenko