Date: Mon, 3 Jan 2005 21:13:08 GMT From: Raimund Huemmer <raimund@baumann-online.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/75764: [patch?] "umass0: Phase Error" - no device for USB HP DVD Writer 300c Message-ID: <200501032113.j03LD8Tl044022@www.freebsd.org> Resent-Message-ID: <200501032120.j03LK3GL082034@freefall.freebsd.org>
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>Number: 75764
>Category: kern
>Synopsis: [patch?] "umass0: Phase Error" - no device for USB HP DVD Writer 300c
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jan 03 21:20:03 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Raimund Huemmer
>Release: 5.3-STABLE
>Organization:
privat
>Environment:
FreeBSD brian.huemmer.net 5.3-STABLE FreeBSD 5.3-STABLE #9: Sun Jan 2 23:32:25 CET 2005 raimund@brian.huemmer.net:/usr/src/sys/i386/compile/MYKERN i386
>Description:
Hardware: HP DVD Writer dc300
Interface: USB
relevant output from dmesg:
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhub1: Hewlett Packard product 0x0a07, class 9/0, rev 2.00/0.00, addr 2
uhub1: 3 ports with 1 removable, self powered
ugen0: Hewlett Packard product 0x0907, rev 2.00/0.00, addr 3
umass0: Hewlett-Packard dc3000, rev 3.00/0.00, addr 4
umass0: Get Max Lun not supported (STALLED)
[...]
At the time, when the Hardware should get the "cd0" device, dmesg
shows only the following output:
umass0: Phase Error, residue = 0
umass0: Phase Error, residue = 0
umass0: Phase Error, residue = 0
umass0: Phase Error, residue = 0
Summary:
There is no "cd0" device and the USB DVD-RW is unusable.
>How-To-Repeat:
By reboot or plug out/in there is always no success and the same error message. Also by "camcontrol -rescan" the problem is repeatable.
>Fix:
Edit or patch the File /usr/src/sys/dev/usb/umass.c at line 1627 with the new line:
#if 0 /* XXX */
and at line 1630 with the new line
#endif
Here is the diff:
------------------------------
--- umass.c Thu Oct 28 09:01:15 2004
+++ umass.c_new Sun Jan 2 23:27:32 2005
@@ -1624,10 +1624,10 @@
} else if (sc->csw.bCSWStatus == CSWSTATUS_PHASE) {
printf("%s: Phase Error, residue = %d\n",
USBDEVNAME(sc->sc_dev), Residue);
+#if 0 /* XXX */
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
+#endif
} else if (sc->transfer_actlen > sc->transfer_datalen) {
/* Buffer overrun! Don't let this go by unnoticed */
panic("%s: transferred %db instead of %db",
-----------------------------------------
After patching, recompiling the kernel and reboot, I've got this dmesg output:
cd0 at umass-sim0 bus 0 target 0 lun 0
cd0: <HP DVD Writer 300c 9k04> Removable CD-ROM SCSI-0 device
cd0: 1.000MB/s transfers
and all works perfectly for me.
Maybe only a workaround for my hardware and not a regular patch.
>Release-Note:
>Audit-Trail:
>Unformatted:
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