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Message-ID: <f739cc15-dade-4f69-a17a-30242026c099@broadcom.com>
Date: Thu, 18 Jan 2024 14:53:28 +0100
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Subject: Re: [PATCH v2] brcmfmac: replace one-element array with
 flexible-array member
To: Atul Raut <rauji.raut@gmail.com>, aspriel@gmail.com,
 Kees Cook <keescook@chromium.org>
Cc: franky.lin@broadcom.com, kvalo@kernel.org,
 linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com,
 linux-kernel-mentees@lists.linuxfoundation.org
References: <20230803052238.12147-1-rauji.raut@gmail.com>
 <20230803052238.12147-2-rauji.raut@gmail.com>
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In-Reply-To: <20230803052238.12147-2-rauji.raut@gmail.com>
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+ Kees

On 8/3/2023 7:22 AM, Atul Raut wrote:
> One-element arrays are obsolete, and flexible
> array members have taken their place. So, in
> struct cca_stats_n_flags, replace the one-element
> array with a flexible-array member.
> 
> This fixes warnings such as:
> ./drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:119:6-9: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

I think this correct, but maybe Kees can give definitive answer here.

> Signed-off-by: Atul Raut <rauji.raut@gmail.com>
> ---
>   drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> index de8a2e27f49c..fff32e54833d 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> @@ -116,7 +116,7 @@ struct brcmf_dump_survey {
>   struct cca_stats_n_flags {
>   	u32 msrmnt_time; /* Time for Measurement (msec) */
>   	u32 msrmnt_done; /* flag set when measurement complete */
> -	char buf[1];
> +	char buf[];
>   };
>   
>   struct cca_msrmnt_query {

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