linux-kernel - Re: [PATCH] ASoC: qcom: q6prm: fix incorrect clk

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Date:   Thu, 2 Mar 2023 13:10:30 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org
Subject: Re: [PATCH] ASoC: qcom: q6prm: fix incorrect clk_root passed to ADSP



On 02/03/2023 12:29, Krzysztof Kozlowski wrote:
> The second to last argument is clk_root (root of the clock), however the
> code called q6prm_request_lpass_clock() with clk_attr instead
> (copy-paste error).  This effectively was passing value of 1 as root
> clock which worked on some of the SoCs (e.g. SM8450) but fails on
> others, depending on the ADSP.  For example on SM8550 this "1" as root
> clock is not accepted and results in errors coming from ADSP.
> 
> Fixes: 2f20640491ed ("ASoC: qdsp6: qdsp6: q6prm: handle clk disable correctly")
> Cc: <stable@...r.kernel.org>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Nice Find, Tested on sc8280xp

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>


--srini
> ---
>   sound/soc/qcom/qdsp6/q6prm.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/qcom/qdsp6/q6prm.c b/sound/soc/qcom/qdsp6/q6prm.c
> index 8aa1a213bfb7..c1dc5bae715a 100644
> --- a/sound/soc/qcom/qdsp6/q6prm.c
> +++ b/sound/soc/qcom/qdsp6/q6prm.c
> @@ -183,9 +183,9 @@ int q6prm_set_lpass_clock(struct device *dev, int clk_id, int clk_attr, int clk_
>   			  unsigned int freq)
>   {
>   	if (freq)
> -		return q6prm_request_lpass_clock(dev, clk_id, clk_attr, clk_attr, freq);
> +		return q6prm_request_lpass_clock(dev, clk_id, clk_attr, clk_root, freq);
>   
> -	return q6prm_release_lpass_clock(dev, clk_id, clk_attr, clk_attr, freq);
> +	return q6prm_release_lpass_clock(dev, clk_id, clk_attr, clk_root, freq);
>   }
>   EXPORT_SYMBOL_GPL(q6prm_set_lpass_clock);
>