linux-kernel - Re: [PATCH 2/3] ASoC: es8316: Add clock control of MCLK

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]

Date:   Fri, 30 Aug 2019 12:18:17 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Katsuhiro Suzuki <katsuhiro@...suster.net>
Cc:     David Yang <yangxiaohua@...rest-semi.com>,
        Daniel Drake <drake@...lessm.com>,
        Hans de Goede <hdegoede@...hat.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] ASoC: es8316: Add clock control of MCLK

On Fri, Aug 30, 2019 at 02:32:04AM +0900, Katsuhiro Suzuki wrote:

> +	es8316->mclk = devm_clk_get(component->dev, "mclk");
> +	if (PTR_ERR(es8316->mclk) == -EPROBE_DEFER)
> +		return -EPROBE_DEFER;

If we don't get a clock it'd be nice to at least log that in case
there's something wrong with the clock driver so that people have more
of a hint as to why things might be breaking.

> +
> +	if (es8316->mclk) {
> +		ret = clk_prepare_enable(es8316->mclk);
> +		if (ret)
> +			return ret;
> +	}
> +

There's nothing that disables the clock on remove.

Otherwise this looks good.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)