linux-kernel - Re: [PATCH 1/3] ASoC: soc-acpi: add alternative id field for machine driver matching

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Message-ID: <9067ad51-11e1-a51c-4201-a8f0449dca68@linux.intel.com>
Date:   Wed, 6 Oct 2021 11:50:59 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Brent Lu <brent.lu@...el.com>, alsa-devel@...a-project.org
Cc:     Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Rander Wang <rander.wang@...el.com>,
        Mac Chiang <mac.chiang@...el.com>,
        Gongjun Song <gongjun.song@...el.com>,
        Bard Liao <bard.liao@...el.com>, Takashi Iwai <tiwai@...e.com>,
        Vamshi Krishna Gopal <vamshi.krishna.gopal@...el.com>,
        Yong Zhi <yong.zhi@...el.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Brown <broonie@...nel.org>,
        Paul Olaru <paul.olaru@....nxp.com>,
        Libin Yang <libin.yang@...el.com>,
        Malik_Hsu <malik_hsu@...tron.corp-partner.google.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        linux-kernel@...r.kernel.org,
        Curtis Malainey <cujomalainey@...omium.org>
Subject: Re: [PATCH 1/3] ASoC: soc-acpi: add alternative id field for machine
 driver matching




> +static bool snd_soc_acpi_id_present(struct snd_soc_acpi_mach *machine)
> +{
> +	struct snd_soc_acpi_codecs *id_alt = machine->id_alt;
> +	int i;
> +
> +	if (acpi_dev_present(machine->id, NULL, -1))
> +		return true;
> +
> +	if (id_alt == NULL)

if (!id_alt)

> +		return false;
> +
> +	for (i = 0; i < id_alt->num_codecs; i++) {
> +		if (acpi_dev_present(id_alt->codecs[i], NULL, -1))
> +			return true;
> +	}
> +
> +	return false;
> +}