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SubjectProblem with uhci and usb-uhci
From
Date
Hi,
Sorry to bother you, but I have found a problem with uhci/usb-uhci
stuff in kernel 2.4.20, which I believe someone might want to look
into.

Summary:
Using usb-midi and doing cat /dev/midi stalls both the uhci.o and
usb-uhci.o, drivers.

Description:
I have a Terratec MK-249 USB MIDI keyboard and a Soundblaster Extigy,
who are both recognised by the usb-midi driver.

It does not matter whether I connect the Extigy or the MIDI keyboard,
the usb systems stalls (my usb mouse stops working) when I cat /dev/midi.

The usb system stalls both on modules uhci.o and usb-uhci.o.

When using uhci.o, I get this stuff in the log:

Jan 4 23:25:45 localhost kernel: usb-midi: Found MIDISTREAMING on dev 0a4d:008c, iface 1
Jan 4 23:25:45 localhost kernel: usb-midi: Found MIDIStreaming device corresponding to Release 1.00 of spec.
Jan 4 23:25:45 localhost kernel: usb-midi: Found IN Jack 0x01 EMBEDDED
Jan 4 23:25:45 localhost kernel: usb-midi: Found IN Jack 0x02 EXTERNAL
Jan 4 23:25:45 localhost kernel: usb-midi: Found OUT Jack 0x03 EMBEDDED, 1 pins
Jan 4 23:25:45 localhost kernel: usb-midi: Found OUT Jack 0x04 EXTERNAL, 1 pins
Jan 4 23:25:45 localhost kernel: usb.c: ignoring set_interface for dev 5, iface 1, alt 0
Jan 4 23:25:45 localhost kernel: usb-midi: fetchString(2)
Jan 4 23:25:45 localhost kernel: usb-midi: fetchString = 24
Jan 4 23:25:45 localhost kernel: usbmidi: found [ MK-249 USB MIDI keyboard ] (0x0a4d:0x008c), attached:
Jan 4 23:25:45 localhost kernel: usbmidi: /dev/midi00: in (ep:81 cid: 0 bufsiz: 0) out (ep:02 cid: 0 bufsiz:64)
Jan 4 23:25:45 localhost kernel: usb.c: midi driver claimed interface d801dc18
After cat /dev/midi:
Jan 4 23:26:09 localhost kernel: uhci.c: uhci_result_interrupt/bulk() failed with status 500000
Jan 4 23:26:09 localhost kernel: [d70ad0c0] link (170ad092) element (1660e240)
Jan 4 23:26:09 localhost kernel: 0: [d660e240] link (00000001) e3 IOC Stalled Babble Length=7ff MaxLen=7ff DT0 EndPt=1 Dev=5, PID=69(IN) (buf=00000000)
Jan 4 23:26:09 localhost kernel:


And, when using usb-uhci.o (and after enabling usb-uhci-debug), I get this:

Jan 5 00:18:20 localhost kernel: usb-uhci.c: interrupt, status 3, frame# 1003
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: usbcmd = 00c1 Maxp64 CF RS
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: usbstat = 0003 USBError USBINT
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: usbint = 000f
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: usbfrnum = (0)fac
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: flbaseadd = 05abd000
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: sof = 40
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: stat1 = 0495 PortEnabled PortConnected
Jan 5 00:18:20 localhost kernel: usb-uhci-debug.h: stat2 = 0495 PortEnabled PortConnected

The usb stuff works fine after I reload the uhci/usb-uhci module.

Kernel:
Linux version 2.4.20-xfs (root@knotten) (gcc version 2.95.4 20011002
(Debian prerelease)) #4 Sat Jan 4 23:09:30 CET 2003.

No oopses or panics.

processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) processor
stepping : 4
cpu MHz : 1401.734
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips : 2798.38

lspci -vvv:

00:07.2 USB Controller: VIA Technologies, Inc. USB (rev 16) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32, cache line size 08
Interrupt: pin D routed to IRQ 5
Region 4: I/O ports at c800 [size=32]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:07.3 USB Controller: VIA Technologies, Inc. USB (rev 16) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 32, cache line size 08
Interrupt: pin D routed to IRQ 5
Region 4: I/O ports at cc00 [size=32]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

Any ideas?

--
Øystein Svendsen

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