linux-kernel - Re: [PATCH] brcmfmac: Replace zero-length array with flexible array member

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Message-ID: <87o88sy2gk.fsf@codeaurora.org>
Date:   Thu, 16 Sep 2021 18:17:31 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Len Baker <len.baker@....com>,
        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>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Kees Cook <keescook@...omium.org>,
        Shawn Guo <shawn.guo@...aro.org>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com, netdev@...r.kernel.org,
        linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] brcmfmac: Replace zero-length array with flexible array member

"Gustavo A. R. Silva" <gustavoars@...nel.org> writes:

> On Sat, Sep 04, 2021 at 11:22:17AM +0200, Len Baker wrote:
>> There is a regular need in the kernel to provide a way to declare
>> having a dynamically sized set of trailing elements in a structure.
>> Kernel code should always use "flexible array members"[1] for these
>> cases. The older style of one-element or zero-length arrays should
>> no longer be used[2].
>> 
>> Also, make use of the struct_size() helper in devm_kzalloc().
>> 
>> [1] https://en.wikipedia.org/wiki/Flexible_array_member
>> [2] https://www.kernel.org/doc/html/v5.14/process/deprecated.html#zero-length-and-one-element-arrays
>> 
>> Signed-off-by: Len Baker <len.baker@....com>
>
> Reviewed-by: Gustavo A. R. Silva <gustavoars@...nel.org>
>
> I'll take this in my -next tree. :)

Why? It should go to wireless-drivers-next.

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