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From: Hans Petter Selasky <hselasky@FreeBSD.org>
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Subject: PERFORCE change 141477 for review
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http://perforce.freebsd.org/chv.cgi?CH=141477

Change 141477 by hselasky@hselasky_laptop001 on 2008/05/11 20:55:05

	
	EHCI: Small correction. Only affects High Speed Isochronous transfers.

Affected files ...

.. //depot/projects/usb/src/sys/dev/usb/ehci.c#78 edit

Differences ...

==== //depot/projects/usb/src/sys/dev/usb/ehci.c#78 (text+ko) ====

@@ -2071,8 +2071,14 @@
 		len = EHCI_ITD_GET_LEN(status);
 
 		if (*plen >= len) {
-			len = *plen - len;
+			/*
+			 * The length is valid. NOTE: The complete
+			 * length is written back into the status
+			 * field, and not the remainder like with
+			 * other transfer descriptor types.
+			 */
 		} else {
+			/* Invalid length - truncate */
 			len = 0;
 		}