netdev - Re: [PATCH] mt76/mt7915: Fix unsigned compared against zero

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Message-ID: <20210626143010.GA2936@ubuntu>
Date:   Sat, 26 Jun 2021 16:30:10 +0200
From:   John Wood <john.wood@....com>
To:     Felix Fietkau <nbd@....name>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Ryder Lee <ryder.lee@...iatek.com>
Cc:     John Wood <john.wood@....com>, Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Shayne Chen <shayne.chen@...iatek.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mt76/mt7915: Fix unsigned compared against zero

On Sat, Jun 12, 2021 at 04:35:05PM +0200, John Wood wrote:
> The mt7915_dpd_freq_idx() function can return a negative value but this
> value is assigned to an unsigned variable named idx. Then, the code
> tests if this variable is less than zero. This can never happen with an
> unsigned type.
>
> So, change the idx type to a signed one.
>
> Addresses-Coverity-ID: 1484753 ("Unsigned compared against 0")
> Fixes: 495184ac91bb8 ("mt76: mt7915: add support for applying pre-calibration data")

Has anyone had time to review this patch?. Any comment on this?

Thanks,
John Wood