Re: [PATCH] ASoC: avoid unused variable warning for rt5659_acpi_match

[Mark Brown]

On Wed, Jan 20, 2016 at 11:43:48AM +0100, Arnd Bergmann wrote:
> The newly added rt5659 codec driver unconditionally defines an
> ACPI device match table but then uses ACPI_PTR() to remove the
> only reference to it, so we get a harmless build warning:

> sound/soc/codecs/rt5659.c:4200:30: warning: 'rt5659_acpi_match' defined but not used [-Wunused-variable]
>  static struct acpi_device_id rt5659_acpi_match[] = {

> This removes the ACPI_PTR() to avoid the warning.

Why is this a better fix than conditionally defining the table?

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