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-rw-r--r--Documentation/wmi/driver-development-guide.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/wmi/driver-development-guide.rst b/Documentation/wmi/driver-development-guide.rst
index 99ef21fc1c1e..5680303ae314 100644
--- 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 },
{ }
};