linux-kernel - Re: [PATCH] ASoC: fsl_sai: Enable MCTL_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]

Message-ID: <CAOMZO5DtpoH0dLDX3=Sv4UUpX_=66VEZPsJUWQNnYviApfMLKQ@mail.gmail.com>
Date:   Thu, 19 May 2022 10:23:06 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Shengjiu Wang <shengjiu.wang@....com>
Cc:     Nicolin Chen <nicoleotsuka@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: fsl_sai: Enable MCTL_MCLK_EN bit for master mode

Hi Shengjiu,

On Thu, May 19, 2022 at 9:49 AM Shengjiu Wang <shengjiu.wang@....com> wrote:

> diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
> index fa950dde5310..dae16a14f177 100644
> --- a/sound/soc/fsl/fsl_sai.c
> +++ b/sound/soc/fsl/fsl_sai.c
> @@ -437,6 +437,12 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq)
>                                    FSL_SAI_CR2_DIV_MASK | FSL_SAI_CR2_BYP,
>                                    savediv / 2 - 1);
>
> +       if (sai->soc_data->max_register >= FSL_SAI_MCTL) {

Isn't it a bit fragile to take this decision based on the number of
SAI registers in the SoC?

What about adding a specific field in soc_data for such a purpose?