platform/x86: alienware-wmi-base: Transition to new WMI API

Transition to the new wmi_buffer based WMI API.

Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260429-aw-new-api-v5-1-7702668d04c6@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/drivers/platform/x86/dell/alienware-wmi-base.c b/drivers/platform/x86/dell/alienware-wmi-base.c
index 64562b92314fad41fc06fc697015756fe7eeab31..19cadf21203a6bd91bfaded9414206eb72e64b64 100644 (file)
--- a/drivers/platform/x86/dell/alienware-wmi-base.c
+++ b/drivers/platform/x86/dell/alienware-wmi-base.c
@@ -12,8 +12,13 @@
 #include <linux/cleanup.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
 #include <linux/dmi.h>
 #include <linux/leds.h>
+
+#include <asm/byteorder.h>
+
 #include "alienware-wmi.h"
 
 MODULE_AUTHOR("Mario Limonciello <mario.limonciello@outlook.com>");
@@ -150,22 +155,22 @@ u8 alienware_interface;
 int alienware_wmi_command(struct wmi_device *wdev, u32 method_id,
                          void *in_args, size_t in_size, u32 *out_data)
 {
-       struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
-       struct acpi_buffer in = {in_size, in_args};
-       acpi_status ret;
+       struct wmi_buffer out, in = {
+               .data = in_args,
+               .length = in_size,
+       };
+       int ret;
 
-       ret = wmidev_evaluate_method(wdev, 0, method_id, &in, out_data ? &out : NULL);
-       if (ACPI_FAILURE(ret))
-               return -EIO;
+       if (!out_data)
+               return wmidev_invoke_procedure(wdev, 0, method_id, &in);
 
-       union acpi_object *obj __free(kfree) = out.pointer;
+       ret = wmidev_invoke_method(wdev, 0, method_id, &in, &out,
+                                  sizeof(*out_data));
+       if (ret)
+               return ret;
 
-       if (out_data) {
-               if (obj && obj->type == ACPI_TYPE_INTEGER)
-                       *out_data = (u32)obj->integer.value;
-               else
-                       return -ENOMSG;
-       }
+       __le32 *data __free(kfree) = out.data;
+       *out_data = le32_to_cpu(*data);
 
        return 0;
 }