6.12-stable review patch. If anyone has any objections, please let me know.
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From: Armin Wolf W_Armin@gmx.de
[ Upstream commit 97b726eb1dc2b4a2532544eb3da72bb6acbd39a3 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- Documentation/wmi/driver-development-guide.rst | 1 + drivers/platform/x86/msi-wmi-platform.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/wmi/driver-development-guide.rst b/Documentation/wmi/driver-development-guide.rst index 429137b2f6323..4c10159d5f6cd 100644 --- a/Documentation/wmi/driver-development-guide.rst +++ b/Documentation/wmi/driver-development-guide.rst @@ -50,6 +50,7 @@ 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 bd2687828a2e6..e912fcc12d124 100644 --- 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