Date: Tue, 16 Dec 2008 11:54:43 +0100 (CET) From: Matthias Andree <matthias.andree@gmx.de> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/129673: uhci (uhub) confused on replugging USB 1.1 scanner Message-ID: <20081216105443.66F9918764@merlin.emma.line.org> Resent-Message-ID: <200812161100.mBGB0FF0063841@freefall.freebsd.org>
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>Number: 129673 >Category: kern >Synopsis: uhci (uhub) confused on replugging USB 1.1 scanner >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Dec 16 11:00:15 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Matthias Andree >Release: FreeBSD 7.1-PRERELEASE i386 >Organization: >Environment: System: FreeBSD merlin.emma.line.org 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #4: Sun Dec 14 18:09:28 CET 2008 root@merlin.emma.line.org:/usr/obj/usr/src/sys/MA7 i386 >Description: The uhci driver can sometimes get into a confused state when unplugging and replugging a stuck USB 1.1 scanner. The port on that hub is then later disabled after a timeout. The scanner has to be plugged to a different hub to get it back to work. $ dmesg # (with angles replaced by parentheses for send-pr) Symptom: scanner gets addr 0: $ usbdevs addr 1: UHCI root hub, VIA addr 0 should never happen! ... usb6: (VIA 83C572 USB controller) on uhci5 usb6: USB revision 1.0 uhub7: (VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1) on usb6 uhub7: 2 ports with 2 removable, self powered ehci1: (VIA VT6202 USB 2.0 controller) mem 0xea800000-0xea8000ff at device 19.2 on pci0 ehci1: [GIANT-LOCKED] ehci1: [ITHREAD] usb7: EHCI version 1.0 usb7: companion controllers, 2 ports each: usb5 usb6 usb7: (VIA VT6202 USB 2.0 controller) on ehci1 usb7: USB revision 2.0 ... uscanner0: (EPSON EPSON Scanner, class 255/255, rev 1.10/3.02, addr 2) on uhub7 uscanner0: at uhub7 port 1 (addr 2) disconnected uscanner0: detached And this happens after replugging: uhub7: device problem (TIMEOUT), disabling port 1 >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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