From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [PATCH] ALSA: ASoC: fix PXA SSP port resume
Date: Fri, 29 Jan 2010 10:13:08 +0000
Message-ID: <20100129101307.GA3201@rakim.wolfsonmicro.main>
References: <1264674858-27461-1-git-send-email-daniel@caiaq.de>
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To: Daniel Mack <daniel@caiaq.de>
Cc: alsa-devel@alsa-project.org, Eric Miao <eric.y.miao@gmail.com>, Philipp Zabel <philipp.zabel@gmail.com>
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On Thu, Jan 28, 2010 at 06:34:18PM +0800, Daniel Mack wrote:
> Invalidate the cached hardware format on resume for PXA SSP ports.
> Otherwise hw_params() will bail out early at the next stream start,
> leaving the registers in a bogus state.

Would it not be better to write the cached state back to the hardware?
Putting an invalid value in the cache seems like asking for trouble.