Unverified Commit e210986f authored by Armin Wolf's avatar Armin Wolf Committed by Ilpo Järvinen
Browse files

platform/x86/intel/wmi: thunderbolt: Use new buffer-based WMI API 



Use the new buffer-based WMI API to avoid having to deal with ACPI
at all.

Signed-off-by: default avatarArmin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260116204116.4030-7-W_Armin@gmx.de


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 534f685d

drivers/platform/x86/intel/wmi/thunderbolt.c

+11 −15
Original line number Diff line number Diff line
@@ -7,7 +7,6 @@ 


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt



#include <linux/acpi.h>

#include <linux/device.h>

#include <linux/fs.h>

#include <linux/kernel.h>
@@ -23,24 +22,21 @@ static ssize_t force_power_store(struct device *dev, 
				 struct device_attribute *attr,

				 const char *buf, size_t count)

{

	struct acpi_buffer input;

	acpi_status status;

	struct wmi_buffer buffer;

	int ret;

	u8 mode;



	input.length = sizeof(u8);

	input.pointer = &mode;

	buffer.length = sizeof(mode);

	buffer.data = &mode;



	mode = hex_to_bin(buf[0]);

	dev_dbg(dev, "force_power: storing %#x\n", mode);

	if (mode == 0 || mode == 1) {

		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;

		}

	} else {

		dev_dbg(dev, "force_power: unsupported mode\n");

	if (mode > 1)

		return -EINVAL;

	}



	ret = wmidev_invoke_method(to_wmi_device(dev), 0, 1, &buffer, NULL);

	if (ret < 0)

		return ret;



	return count;

}