linux-kernel - Re: [PATCH] bus: bt1-axi: change to use devm_clk_get

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Message-ID: <jwspy5qbmtkl32wngiv7cgypy7sox3zeqks3wkqsuqra6vx7p2@3xg2rbc3lxp5>
Date: Fri, 23 Aug 2024 11:56:52 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Wu Bo <bo.wu@...o.com>
Cc: linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org, 
	Wu Bo <wubo.oduw@...il.com>
Subject: Re: [PATCH] bus: bt1-axi: change to use devm_clk_get_enabled()
 helpers

Hi Wu

On Thu, Aug 22, 2024 at 08:31:03PM -0600, Wu Bo wrote:
> Make the code cleaner and avoid call clk_disable_unprepare()
> 
> Signed-off-by: Wu Bo <bo.wu@...o.com>

Awesome! Thanks.

Acked-by: Serge Semin <fancer.lancer@...il.com>

Could you also apply the same change to drivers/bus/bt1-apb.c ?

-Serge(y)

> ---
>  drivers/bus/bt1-axi.c | 19 +------------------
>  1 file changed, 1 insertion(+), 18 deletions(-)
> 
> diff --git a/drivers/bus/bt1-axi.c b/drivers/bus/bt1-axi.c
> index 4007e7322cf2..b0baae49aca6 100644
> --- a/drivers/bus/bt1-axi.c
> +++ b/drivers/bus/bt1-axi.c
> @@ -146,32 +146,15 @@ static int bt1_axi_request_rst(struct bt1_axi *axi)
>  	return ret;
>  }
>  
> -static void bt1_axi_disable_clk(void *data)
> -{
> -	struct bt1_axi *axi = data;
> -
> -	clk_disable_unprepare(axi->aclk);
> -}
> -
>  static int bt1_axi_request_clk(struct bt1_axi *axi)
>  {
>  	int ret;
>  
> -	axi->aclk = devm_clk_get(axi->dev, "aclk");
> +	axi->aclk = devm_clk_get_enabled(axi->dev, "aclk");
>  	if (IS_ERR(axi->aclk))
>  		return dev_err_probe(axi->dev, PTR_ERR(axi->aclk),
>  				     "Couldn't get AXI Interconnect clock\n");
>  
> -	ret = clk_prepare_enable(axi->aclk);
> -	if (ret) {
> -		dev_err(axi->dev, "Couldn't enable the AXI clock\n");
> -		return ret;
> -	}
> -
> -	ret = devm_add_action_or_reset(axi->dev, bt1_axi_disable_clk, axi);
> -	if (ret)
> -		dev_err(axi->dev, "Can't add AXI clock disable action\n");
> -
>  	return ret;
>  }
>  
> -- 
> 2.25.1
>