linux-kernel - Re: [PATCH 18/25] ASoC: component: Add generic PCM copy ops

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Date:   Tue, 15 Aug 2023 16:56:58 +0300
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 18/25] ASoC: component: Add generic PCM copy ops

On Mon, Aug 14, 2023 at 01:55:16PM +0200, Takashi Iwai wrote:
> For following the ALSA PCM core change, a new PCM copy ops is added
> toe ASoC component framework: snd_soc_component_driver receives the
> copy ops, and snd_soc_pcm_component_copy() helper is provided.
> 
> This also fixes a long-standing potential bug where the ASoC driver
> covers only copy_user PCM callback and misses the copy from kernel
> pointers (such as OSS PCM layer), too.
> 
> As of this patch, the old copy_user is still kept, but it'll be
> dropped later after all drivers are converted.

...

> +	/* FIXME. it returns 1st copy now */
> +	for_each_rtd_components(rtd, i, component)
> +		if (component->driver->copy)
> +			return soc_component_ret(
> +				component,

This can be on the previous line.

> +				component->driver->copy(
> +					component, substream, channel,

Ditto for the component parameter.

> +					pos, buf, bytes));

-- 
With Best Regards,
Andy Shevchenko