linux-kernel - Re: [RFC PATCH 1/9] cxl/acpi: Add an acpi

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Message-ID: <20201111230348.GA978803@bjorn-Precision-5520>
Date:   Wed, 11 Nov 2020 17:03:48 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Ben Widawsky <ben.widawsky@...el.com>
Cc:     linux-cxl@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
        Dan Williams <dan.j.williams@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        "Kelley, Sean V" <sean.v.kelley@...el.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [RFC PATCH 1/9] cxl/acpi: Add an acpi_cxl module for the CXL
 interconnect

On Tue, Nov 10, 2020 at 09:43:48PM -0800, Ben Widawsky wrote:

> +static int acpi_cxl_add(struct acpi_device *adev)
> +{
> +	struct acpi_cxl_desc *acpi_desc;
> +	struct device *dev = &adev->dev;
> +	struct acpi_table_header *tbl;
> +	acpi_status status = AE_OK;

Pointless init.

> +	acpi_size sz;
> +	int rc = 0;

Pointless init.

> +	status = acpi_get_table(ACPI_SIG_CEDT, 0, &tbl);
> +	if (ACPI_FAILURE(status)) {
> +		dev_err(dev, "failed to find CEDT at startup\n");
> +		return 0;
> +	}
> +
> +	rc = devm_add_action_or_reset(dev, acpi_cedt_put_table, tbl);
> +	if (rc)
> +		return rc;