linux-kernel - Re: [PATCH AUTOSEL 4.19 031/123] ASoC: Intel: Power down links before turning off display audio power

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Message-ID: <20181205114851.GC6205@sirena.org.uk>
Date:   Wed, 5 Dec 2018 11:48:51 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Sasha Levin <sashal@...nel.org>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sriram Periyasamy <sriramx.periyasamy@...el.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [PATCH AUTOSEL 4.19 031/123] ASoC: Intel: Power down links
 before turning off display audio power

On Wed, Dec 05, 2018 at 04:34:23AM -0500, Sasha Levin wrote:
> From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> 
> [ Upstream commit 4c10473d6ddf12ec124c9ff71a5d23bb5388478b ]
> 
> On certain platforms, Display HDMI HDA codec was not going to sleep state
> after the use when links are powered down after turning off the display
> power. As per the HW recommendation, links are powered down before turning
> off the display power to ensure that the codec goes to sleep state.

Are we sure there's no dependencies here?

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