linux-kernel - Re: [PATCH 4/4] platform/x86/intel/wmi: thunderbolt: Use bus-based WMI interface

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Date:   Thu, 2 Nov 2023 08:28:17 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     Armin Wolf <W_Armin@....de>, jithu.joseph@...el.com,
        maurice.ma@...el.com, hdegoede@...hat.com, markgross@...nel.org,
        ilpo.jarvinen@...ux.intel.com
Cc:     Dell.Client.Kernel@...l.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] platform/x86/intel/wmi: thunderbolt: Use bus-based
 WMI interface

On 11/1/2023 23:29, Armin Wolf wrote:
> Currently, the driver still uses the legacy GUID-based interface
> to invoke WMI methods. Use the modern bus-based interface instead.
> 
> Tested on a Lenovo E51-80.
> 
> Signed-off-by: Armin Wolf <W_Armin@....de>
> ---
>   drivers/platform/x86/intel/wmi/thunderbolt.c | 3 +--
>   drivers/platform/x86/wmi.c                   | 1 +
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/platform/x86/intel/wmi/thunderbolt.c b/drivers/platform/x86/intel/wmi/thunderbolt.c
> index fc333ff82d1e..e2ad3f46f356 100644
> --- a/drivers/platform/x86/intel/wmi/thunderbolt.c
> +++ b/drivers/platform/x86/intel/wmi/thunderbolt.c
> @@ -32,8 +32,7 @@ static ssize_t force_power_store(struct device *dev,
>   	mode = hex_to_bin(buf[0]);
>   	dev_dbg(dev, "force_power: storing %#x\n", mode);
>   	if (mode == 0 || mode == 1) {
> -		status = wmi_evaluate_method(INTEL_WMI_THUNDERBOLT_GUID, 0, 1,
> -					     &input, NULL);
> +		status = wmidev_evaluate_method(to_wmi_device(dev), 0, 1, &input, NULL);
>   		if (ACPI_FAILURE(status)) {
>   			dev_dbg(dev, "force_power: failed to evaluate ACPI method\n");
>   			return -ENODEV;
> diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
> index 4c4effc883ae..58e7d5d535ba 100644
> --- a/drivers/platform/x86/wmi.c
> +++ b/drivers/platform/x86/wmi.c
> @@ -107,6 +107,7 @@ static const char * const allow_duplicates[] = {
>   	"05901221-D566-11D1-B2F0-00A0C9062910",	/* wmi-bmof */
>   	"8A42EA14-4F2A-FD45-6422-0087F7A7E608",	/* dell-wmi-ddv */
>   	"44FADEB1-B204-40F2-8581-394BBDC1B651",	/* intel-wmi-sbl-fw-update */
> +	"86CCFD48-205E-4A77-9C48-2021CBEDE341",	/* intel-wmi-thunderbold */

s/thunderbold/thunderbolt/

>   	NULL
>   };
> 
> --
> 2.39.2
>