linux-kernel - Re: [PATCH v2 5/9] x86/quirks: Convert DMI matching to use a table

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Date:   Tue, 21 Jan 2020 11:51:25 +0000
From:   Jonathan McDowell <noodles@...th.li>
To:     andriy.shevchenko@...ux.intel.com
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/9] x86/quirks: Convert DMI matching to use a table

In article <20200120160801.53089-6-andriy.shevchenko@...ux.intel.com> you wrote:
> In order to extend the DMI based quirks, convert them to a table.

> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  arch/x86/kernel/quirks.c | 33 +++++++++++++++++++++++++++++++--
>  1 file changed, 31 insertions(+), 2 deletions(-)

> diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
> index 6c122f35508a..78846a8dc88b 100644
> --- a/arch/x86/kernel/quirks.c
> +++ b/arch/x86/kernel/quirks.c
> @@ -658,8 +658,37 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2083, quirk_intel_purley_xeon_ras
>  bool x86_apple_machine;
>  EXPORT_SYMBOL(x86_apple_machine);
>  
> +static const struct dmi_system_id x86_machine_table[] __initconst = {
> +	{
> +		.ident = "x86 Apple Macintosh",
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
> +		},
> +		.driver_data = &x86_apple_machine,
> +	},
> +	{
> +		.ident = "x86 Apple Macintosh",
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
> +		},
> +		.driver_data = &x86_apple_machine,
> +	},
> +	{}
> +};
> +
> +static void __init early_platfrom_detect_quirk(void)

"platform"

> +{
> +	const struct dmi_system_id *id;
> +
> +	id = dmi_first_match(x86_machine_table);
> +	if (!id)
> +		return;
> +
> +	printk(KERN_DEBUG "Detected %s platform\n", id->ident);
> +	*((bool *)id->driver_data) = true;
> +}
> +
>  void __init early_platform_quirks(void)
>  {
> -	x86_apple_machine = dmi_match(DMI_SYS_VENDOR, "Apple Inc.") ||
> -			    dmi_match(DMI_SYS_VENDOR, "Apple Computer, Inc.");
> +	early_platfrom_detect_quirk();

As above.

>  }

J.

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