linux-kernel - Re: [PATCH v3 1/3] ASoC: Add support for Loongson I2S controller

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Date:   Thu, 15 Jun 2023 12:30:31 +0100
From:   Mark Brown <broonie@...nel.org>
To:     YingKun Meng <mengyingkun@...ngson.cn>
Cc:     lgirdwood@...il.com, krzysztof.kozlowski@...aro.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        loongarch@...ts.linux.dev, loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH v3 1/3] ASoC: Add support for Loongson I2S controller

On Wed, Jun 14, 2023 at 08:21:40PM +0800, YingKun Meng wrote:
> From: Yingkun Meng <mengyingkun@...ngson.cn>
> 
> Loongson I2S controller is found on 7axxx/2kxxx chips from loongson,
> it is a PCI device with two private DMA controllers, one for playback,
> the other for capture.
> 
> The driver supports the use of DTS or ACPI to describe device resources.

One minor thing which can be done as an incremental patch:

> +/*
> + * DMA registers descriptor.
> + */
> +struct loongson_dma_desc {
> +	u32 order;		/* Next descriptor address register */

This probably needs a __packed to ensure the layout doesn't get changed
by the compiler (eg, with struct randomisation options).

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