linux-kernel - Re: [PATCH 2/2] ASOC: rockchip: Use helper function devm_clk_get

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Message-ID: <6399b093-f8ce-4dff-9cf8-f483d221d034@kylinos.cn>
Date: Thu, 5 Jun 2025 10:00:05 +0800
From: Pei Xiao <xiaopei01@...inos.cn>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 linux-rockchip@...ts.infradead.org, linux-sound@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ASOC: rockchip: Use helper function
 devm_clk_get_enabled()


在 2025/6/5 01:42, Nicolas Frattaroli 写道:
> On Wednesday, 4 June 2025 05:13:30 Central European Summer Time Pei Xiao wrote:
>> Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared
>> and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
>> replaced by devm_clk_get_enabled() when driver enables the clocks for the
>> whole lifetime of the device. Moreover, it is no longer necessary to
>> unprepare and disable the clocks explicitly.
>>
>> Signed-off-by: Pei Xiao <xiaopei01@...inos.cn>
>> ---
>>  sound/soc/rockchip/rockchip_sai.c | 8 +-------
>>  1 file changed, 1 insertion(+), 7 deletions(-)
>>
>> diff --git a/sound/soc/rockchip/rockchip_sai.c b/sound/soc/rockchip/rockchip_sai.c
>> index 79b04770da1c..2ec675708681 100644
>> --- a/sound/soc/rockchip/rockchip_sai.c
>> +++ b/sound/soc/rockchip/rockchip_sai.c
>> @@ -1448,16 +1448,12 @@ static int rockchip_sai_probe(struct platform_device *pdev)
>>  				     "Failed to get mclk\n");
>>  	}
>>  
>> -	sai->hclk = devm_clk_get(&pdev->dev, "hclk");
>> +	sai->hclk = devm_clk_get_enabled(&pdev->dev, "hclk");
>>  	if (IS_ERR(sai->hclk)) {
>>  		return dev_err_probe(&pdev->dev, PTR_ERR(sai->hclk),
>>  				     "Failed to get hclk\n");
>>  	}
>>  
>> -	ret = clk_prepare_enable(sai->hclk);
>> -	if (ret)
>> -		return dev_err_probe(&pdev->dev, ret, "Failed to enable hclk\n");
>> -
>>  	regmap_read(sai->regmap, SAI_VERSION, &sai->version);
>>  
>>  	ret = rockchip_sai_init_dai(sai, res, &dai);
>> @@ -1512,8 +1508,6 @@ static int rockchip_sai_probe(struct platform_device *pdev)
>>  	if (pm_runtime_put(&pdev->dev))
>>  		rockchip_sai_runtime_suspend(&pdev->dev);
>>  err_disable_hclk:
>> -	clk_disable_unprepare(sai->hclk);
>> -
>>  	return ret;
>>  }
>>  
>>
> Please get rid of the err_disable_hclk label, and change the
>
>     goto err_disable_hclk;
>
> in the resume failure condition to a 
>
>     return ret;

ok,thanks!

> Other than that, patch tested to be working fine.
>
> Kind regards,
> Nicolas Frattaroli
>
>