[PATCH] UHCI: use integer-sized frame numbers

This patch (as687) changes uhci-hcd to keep track of frame numbers as
full-sized integers rather than 11-bit values.  This makes them a lot
easier to handle and makes it possible to schedule beyond a 2-second
window, should anyone ever want to do so.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 04938e64799f..c87ceaa178b6 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