[PATCH v2 09/16] platform/x86: wmi: move dev_to_wblock() and dev_to_wdev to use container_of_const()

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

The driver core is changing to pass some pointers as const, so move the
dev_to_wdev() and dev_to_wblock() functions to use container_of_const()
to handle this change.

Both of these functions now properly keep the const-ness of the pointer
passed into it, while as before it could be lost.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Mark Gross <markgross@kernel.org>
Cc: platform-driver-x86@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/platform/x86/wmi.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 5ffc00480aef..46d1edc08f20 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -693,15 +693,8 @@ char *wmi_get_acpi_device_uid(const char *guid_string)
 }
 EXPORT_SYMBOL_GPL(wmi_get_acpi_device_uid);
 
-static struct wmi_block *dev_to_wblock(struct device *dev)
-{
-	return container_of(dev, struct wmi_block, dev.dev);
-}
-
-static struct wmi_device *dev_to_wdev(struct device *dev)
-{
-	return container_of(dev, struct wmi_device, dev);
-}
+#define dev_to_wblock(__dev)	container_of_const(__dev, struct wmi_block, dev.dev)
+#define dev_to_wdev(__dev)	container_of_const(__dev, struct wmi_device, dev)
 
 static inline struct wmi_driver *drv_to_wdrv(struct device_driver *drv)
 {
-- 
2.39.0