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Diffstat (limited to 'tmk_core/protocol/usb_descriptor.h')
-rw-r--r--tmk_core/protocol/usb_descriptor.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/tmk_core/protocol/usb_descriptor.h b/tmk_core/protocol/usb_descriptor.h
index 2469990f4d..ecfb022702 100644
--- a/tmk_core/protocol/usb_descriptor.h
+++ b/tmk_core/protocol/usb_descriptor.h
@@ -196,6 +196,8 @@ enum usb_interfaces {
TOTAL_INTERFACES
};
+#define IS_VALID_INTERFACE(i) ((i) >= 0 && (i) < TOTAL_INTERFACES)
+
#define NEXT_EPNUM __COUNTER__
/*