linux-kernel - Re: [PATCH 2/2] ASoC: mediatek: mt8195: fix use-after-free in driver remove path

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Message-ID: <CAD=FV=XUKuDVb+B9i31TfyNwGY11MM-q6eJJVkrasj=GGboRcg@mail.gmail.com>
Date:   Wed, 31 May 2023 16:47:59 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Trevor Wu <trevor.wu@...iatek.com>
Cc:     broonie@...nel.org, lgirdwood@...il.com, tiwai@...e.com,
        perex@...ex.cz, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com,
        alsa-devel@...a-project.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ASoC: mediatek: mt8195: fix use-after-free in driver
 remove path

Hi,

On Tue, May 30, 2023 at 12:25 AM Trevor Wu <trevor.wu@...iatek.com> wrote:
>
> diff --git a/sound/soc/mediatek/mt8195/mt8195-audsys-clk.c b/sound/soc/mediatek/mt8195/mt8195-audsys-clk.c
> index e0670e0dbd5b..09bd1a020421 100644
> --- a/sound/soc/mediatek/mt8195/mt8195-audsys-clk.c
> +++ b/sound/soc/mediatek/mt8195/mt8195-audsys-clk.c
> @@ -148,6 +148,29 @@ static const struct afe_gate aud_clks[CLK_AUD_NR_CLK] = {
>         GATE_AUD6(CLK_AUD_GASRC19, "aud_gasrc19", "top_asm_h", 19),
>  };
>
> +static void mt8195_audsys_clk_unregister(void *data)
> +{
> +       struct mtk_base_afe *afe = (struct mtk_base_afe *)data;

Same as in patch #1, the above cast isn't necessary. Other than that:

Reviewed-by: Douglas Anderson <dianders@...omium.org>