linux-kernel - Re: rtw88: fix fw_fifo

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Date:   Mon,  2 Nov 2020 18:16:53 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     trix@...hat.com
Cc:     yhchuang@...ltek.com, davem@...emloft.net, kuba@...nel.org,
        natechancellor@...il.com, ndesaulniers@...gle.com,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com,
        Tom Rix <trix@...hat.com>
Subject: Re: rtw88: fix fw_fifo_addr check

trix@...hat.com wrote:

> From: Tom Rix <trix@...hat.com>
> 
> The clang build reports this warning
> 
> fw.c:1485:21: warning: address of array 'rtwdev->chip->fw_fifo_addr'
>   will always evaluate to 'true'
>         if (!rtwdev->chip->fw_fifo_addr) {
> 
> fw_fifo_addr is an array in rtw_chip_info so it is always
> nonzero.  A better check is if the first element of the array is
> nonzero.  In the cases where fw_fifo_addr is initialized by rtw88b
> and rtw88c, the first array element is 0x780.
> 
> Fixes: 0fbc2f0f34cc ("rtw88: add dump firmware fifo support")
> Signed-off-by: Tom Rix <trix@...hat.com>
> Reviewed-by: Nathan Chancellor <natechancellor@...il.com>
> Acked-by: Tzu-En Huang <tehuang@...ltek.com>

Patch applied to wireless-drivers.git, thanks.

ddcd945e556e rtw88: fix fw_fifo_addr check

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20201011155438.15892-1-trix@redhat.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches