platform/x86: msi-wmi-platform: Fix typo in WMI GUID

The WMI driver core only supports GUID strings containing only
uppercase characters, however the GUID string used by the
msi-wmi-platform driver contains a single lowercase character.
This prevents the WMI driver core from matching said driver to
its WMI device.

Fix this by turning the lowercase character into a uppercase
character. Also update the WMI driver development guide to warn
about this.

Reported-by: Antheas Kapenekakis <lkml@antheas.dev>
Fixes: 9c0beb6b29e7 ("platform/x86: wmi: Add MSI WMI Platform driver")
Tested-by: Antheas Kapenekakis <lkml@antheas.dev>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20251110111253.16204-3-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/Documentation/wmi/driver-development-guide.rst b/Documentation/wmi/driver-development-guide.rst
index 99ef21fc1c1edd697bc83fce09446944ba9184ca..5680303ae314e02a8f8a9e3fbf338bfd4d327209 100644 (file)
--- a/Documentation/wmi/driver-development-guide.rst
+++ b/Documentation/wmi/driver-development-guide.rst
@@ -54,6 +54,7 @@ to matching WMI devices using a struct wmi_device_id table:
 ::
 
   static const struct wmi_device_id foo_id_table[] = {
+         /* Only use uppercase letters! */
          { "936DA01F-9ABD-4D9D-80C7-02AF85C822A8", NULL },
          { }
   };

diff --git a/drivers/platform/x86/msi-wmi-platform.c b/drivers/platform/x86/msi-wmi-platform.c
index bd2687828a2e6fab15d02fe05dcdc305ec094ab4..e912fcc12d124390476051ed2071ee9e38f8fb8e 100644 (file)
--- a/drivers/platform/x86/msi-wmi-platform.c
+++ b/drivers/platform/x86/msi-wmi-platform.c
@@ -29,7 +29,7 @@
 
 #define DRIVER_NAME    "msi-wmi-platform"
 
-#define MSI_PLATFORM_GUID      "ABBC0F6E-8EA1-11d1-00A0-C90629100000"
+#define MSI_PLATFORM_GUID      "ABBC0F6E-8EA1-11D1-00A0-C90629100000"
 
 #define MSI_WMI_PLATFORM_INTERFACE_VERSION     2