From: Armin Wolf <W_Armin@gmx.de>
Date: Fri, 3 Nov 2023 18:25:24 +0000 (+0100)
Subject: platform/x86: wmi: Add to_wmi_device() helper macro
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7275bf3e09578e1761157e7683f2e898c5c235a6;p=linux.git

platform/x86: wmi: Add to_wmi_device() helper macro

Add a helper macro for WMI drivers to cast a device to
the corresponding WMI device. This should replace some
boilerplate code.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231103182526.3524-2-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---

diff --git a/include/linux/wmi.h b/include/linux/wmi.h
index 207544968268a..8a643c39fcced 100644
--- a/include/linux/wmi.h
+++ b/include/linux/wmi.h
@@ -27,6 +27,14 @@ struct wmi_device {
 	bool setable;
 };
 
+/**
+ * to_wmi_device() - Helper macro to cast a device to a wmi_device
+ * @device: device struct
+ *
+ * Cast a struct device to a struct wmi_device.
+ */
+#define to_wmi_device(device)	container_of(device, struct wmi_device, dev)
+
 extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev,
 					  u8 instance, u32 method_id,
 					  const struct acpi_buffer *in,