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-rw-r--r--include/linux/usb/ch9.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 8f8b7411b87..94012e649d8 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -258,6 +258,8 @@ struct usb_device_descriptor {
#define USB_CLASS_APP_SPEC 0xfe
#define USB_CLASS_VENDOR_SPEC 0xff
+#define USB_SUBCLASS_VENDOR_SPEC 0xff
+
/*-------------------------------------------------------------------------*/
/* USB_DT_CONFIG: Configuration descriptor information.