linux-kernel - Re: [PATCH] ASoC: fsl_spdif: Add pm runtime function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200619054942.GA25856@Asurada-Nvidia>
Date:   Thu, 18 Jun 2020 22:49:43 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
Cc:     timur@...nel.org, Xiubo.Lee@...il.com, festevam@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: fsl_spdif: Add pm runtime function

On Thu, Jun 18, 2020 at 07:55:34PM +0800, Shengjiu Wang wrote:
> Add pm runtime support and move clock handling there.
> Close the clocks at suspend to reduce the power consumption.
> 
> fsl_spdif_suspend is replaced by pm_runtime_force_suspend.
> fsl_spdif_resume is replaced by pm_runtime_force_resume.
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>

LGTM, yet some nits, please add my ack after fixing:

Acked-by: Nicolin Chen <nicoleotsuka@...il.com>

> @@ -495,25 +496,10 @@ static int fsl_spdif_startup(struct snd_pcm_substream *substream,

>  
> -disable_txclk:
> -	for (i--; i >= 0; i--)
> -		clk_disable_unprepare(spdif_priv->txclk[i]);
>  err:
> -	if (!IS_ERR(spdif_priv->spbaclk))
> -		clk_disable_unprepare(spdif_priv->spbaclk);
> -err_spbaclk:
> -	clk_disable_unprepare(spdif_priv->coreclk);
> -
>  	return ret;

Only "return ret;" remains now. We could clean the goto away.

> -static int fsl_spdif_resume(struct device *dev)
> +static int fsl_spdif_runtime_resume(struct device *dev)

> +disable_rx_clk:
> +	clk_disable_unprepare(spdif_priv->rxclk);
> +disable_tx_clk:
> +disable_spba_clk:

Why have two duplicated ones? Could probably drop the 2nd one.