linux-kernel - Re: [PATCH 1/1] cxl/acpi.c: Add buggy BIOS hint for CXL ACPI lookup failure

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Date: Sun, 7 Apr 2024 23:28:24 +0200
From: Lukas Wunner <lukas@...ner.de>
To: ppwaskie@...nel.org
Cc: Dan Williams <dan.j.williams@...el.com>, linux-cxl@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] cxl/acpi.c: Add buggy BIOS hint for CXL ACPI lookup
 failure

On Sun, Apr 07, 2024 at 02:05:26PM -0700, ppwaskie@...nel.org wrote:
> --- a/drivers/cxl/acpi.c
> +++ b/drivers/cxl/acpi.c
> @@ -504,7 +504,7 @@ static int cxl_get_chbs(struct device *dev, struct acpi_device *hb,
>  
>  	rc = acpi_evaluate_integer(hb->handle, METHOD_NAME__UID, NULL, &uid);
>  	if (rc != AE_OK) {
> -		dev_err(dev, "unable to retrieve _UID\n");
> +		dev_err(dev, "unable to retrieve _UID. Potentially buggy BIOS\n");
>  		return -ENOENT;
>  	}

dev_err(dev, FW_BUG "unable to retrieve _UID\n");
             ^^^^^^

There's a macro for that.