linux-kernel - Re: [alsa-devel] [PATCH V2 02/10] ASoC: img: Add driver for I2S input controller

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Date:	Fri, 30 Oct 2015 10:20:20 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Damien Horsley <Damien.Horsley@...tec.com>
Cc:	alsa-devel@...a-project.org,
	James Hartley <James.Hartley@...tec.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH V2 02/10] ASoC: img: Add driver for I2S
 input controller

On Thu, Oct 29, 2015 at 03:42:59PM +0000, Damien Horsley wrote:

> For the I2S In, there is another issue with flushing on stream close. If
> the stream is stopped, then reconfigured to use a larger number of
> channels (without the stream being closed), then the per-channel fifos
> will become inconsistent with each other. The new channels will have no
> samples in their FIFOs, while the others may contain samples from the
> previous stream.

> Would hw_params be the correct place to flush instead?

Yes, you could flush there (or in both places for that matter).

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