linux-kernel - Re: [PATCH V2] ASoC: soc-core: Prevent warning if no DMI table is present

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Message-ID: <20210310133534.GD4746@sirena.org.uk>
Date:   Wed, 10 Mar 2021 13:35:34 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Jon Hunter <jonathanh@...dia.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Takashi Iwai <tiwai@...e.com>, linux-tegra@...r.kernel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Bard liao <yung-chuan.liao@...ux.intel.com>
Subject: Re: [PATCH V2] ASoC: soc-core: Prevent warning if no DMI table is
 present

On Tue, Mar 09, 2021 at 01:41:45PM -0600, Pierre-Louis Bossart wrote:

> The problem is that the cards are platform devices created by the parent
> (which itself may be a PCI or ACPI device) and have nothing to do with ACPI.

> Could we flip the logic and instead explicitly detect OF devices? That
> restores functionality for us.

Just change it to a system level check for ACPI, checking for OF would
leave problems for board files or any other alternative firmware
interfaces.

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