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-rw-r--r--drivers/usb/host/uhci-hcd.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 04938e6..c87ceaa 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -448,6 +448,9 @@ static inline struct usb_hcd *uhci_to_hcd(struct uhci_hcd *uhci)
#define uhci_dev(u) (uhci_to_hcd(u)->self.controller)
+/* Utility macro for comparing frame numbers */
+#define uhci_frame_before_eq(f1, f2) (0 <= (int) ((f2) - (f1)))
+
/*
* Private per-URB data