Re: [PATCH v2 4/5] platform/chrome: cros_ec_lpc: Add a new quirk for AML mutex

[Tzung-Bi Shih]

On Mon, Jun 03, 2024 at 07:38:33AM +0100, Ben Walsh wrote:
> @@ -484,6 +492,18 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
>  			}
>  			ACPI_COMPANION_SET(dev, adev);
>  		}
> +
> +		if (quirks & CROS_EC_LPC_QUIRK_AML_MUTEX) {
> +			const char *name
> +				= driver_data->quirk_aml_mutex_name;
> +			ret = cros_ec_lpc_mec_acpi_mutex(adev, name);

* Assuming the `adev = ACPI_COMPANION(dev);` didn't move in previous patch,
  `adev` here could be uninitialized.

* Also, it shouldn't rely on CROS_EC_LPC_QUIRK_ACPI_ID to set the `adev`.

To keep it simple, I would suggest to use ACPI_COMPANION() instead.