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From: Andrew Thompson <thompsa@FreeBSD.org>
Date: Tue, 6 Apr 2010 23:16:40 +0000 (UTC)
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Subject: svn commit: r206293 - stable/8/sys/dev/usb/controller
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Author: thompsa
Date: Tue Apr  6 23:16:40 2010
New Revision: 206293
URL: http://svn.freebsd.org/changeset/base/206293

Log:
  MFC r203140
  
   Optimise EHCI ISOC HS done check.
  
  Submitted by:	Hans Petter Selasky

Modified:
  stable/8/sys/dev/usb/controller/ehci.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/dev/usb/controller/ehci.c
==============================================================================
--- stable/8/sys/dev/usb/controller/ehci.c	Tue Apr  6 23:16:09 2010	(r206292)
+++ stable/8/sys/dev/usb/controller/ehci.c	Tue Apr  6 23:16:40 2010	(r206293)
@@ -1340,25 +1340,22 @@ ehci_check_transfer(struct usb_xfer *xfe
 		}
 	} else if (methods == &ehci_device_isoc_hs_methods) {
 		ehci_itd_t *td;
+		uint8_t n = (xfer->nframes & 7);
 
 		/* isochronous high speed transfer */
 
+		/* check last transfer */
 		td = xfer->td_transfer_last;
 		usb_pc_cpu_invalidate(td->page_cache);
-		status =
-		    td->itd_status[0] | td->itd_status[1] |
-		    td->itd_status[2] | td->itd_status[3] |
-		    td->itd_status[4] | td->itd_status[5] |
-		    td->itd_status[6] | td->itd_status[7];
+		if (n == 0)
+			status = td->itd_status[7];
+		else
+			status = td->itd_status[n-1];
 
 		/* also check first transfer */
 		td = xfer->td_transfer_first;
 		usb_pc_cpu_invalidate(td->page_cache);
-		status |=
-		    td->itd_status[0] | td->itd_status[1] |
-		    td->itd_status[2] | td->itd_status[3] |
-		    td->itd_status[4] | td->itd_status[5] |
-		    td->itd_status[6] | td->itd_status[7];
+		status |= td->itd_status[0];
 
 		/* if no transactions are active we continue */
 		if (!(status & htohc32(sc, EHCI_ITD_ACTIVE))) {