kern/107495: Fix long wait before WD My Book 250GB (USB) is recognized

Jason Harris jharris at widomaker.com
Wed Jan 3 12:00:39 PST 2007


>Number:         107495
>Category:       kern
>Synopsis:       Fix long wait before WD My Book 250GB (USB) is recognized
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan 03 20:00:38 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Jason Harris
>Release:        FreeBSD 6.2-PRERELEASE i386
>Organization:
Not usually...
>Environment:
System: FreeBSD wilma.widomaker.com 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #13: Wed Jan 3 14:06:08 EST 2007 root at wilma.widomaker.com:/usr/obj/usr/src/sys/TUNER i386

>Description:
	My "WD My Book 250GB" (USB) doesn't give up its serial number,
	causing about a 10min delay before the device is recognized.
	
>How-To-Repeat:
	apply patch below, esp. to tag=RELENG_6

>Fix:

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Hash: SHA1
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/usr/src/sys/cam/cam_xpt.c:
     $FreeBSD: src/sys/cam/cam_xpt.c,v 1.155.2.10 2006/12/24 03:23:43 mjacob Exp $
===================================================================
RCS file: /usr/src/sys/cam/cam_xpt.c,v
retrieving revision 1.1
diff -u -r1.1 /usr/src/sys/cam/cam_xpt.c
--- /usr/src/sys/cam/cam_xpt.c	2007/01/03 17:39:53	1.1
+++ /usr/src/sys/cam/cam_xpt.c	2007/01/03 19:14:46
@@ -539,6 +539,18 @@
 	},
 	{
 		/*
+		 * Western Digital My Book 250GB (USB)
+		 * hangs upon serial number probing.
+		 * Patched by: "Jason Harris" <jharris at widomaker.com>
+		 */
+		{
+			T_DIRECT, SIP_MEDIA_FIXED, "WD",
+			"2500JB External", "*"
+		},
+		CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0
+	},
+	{
+		/*
 		 * Would repond to all LUNs if asked for.
 		 */
 		{
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>Release-Note:
>Audit-Trail:
>Unformatted:


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