Re: usb-uhci *BUG*

From: Ian Molton (spyro@armlinux.org)
Date: Sun Apr 14 2002 - 12:32:47 EST


Greg KH Awoke this dragon, who will now respond:

> On Sun, Apr 14, 2002 at 12:40:22AM +0100, Ian Molton wrote:
> > Hi
> >
> > I'm not familiar with the USB code, but I've been hitting a BUG() with
> > my new OHCI card (sorry, it was cheap :( )
> >
> > the BUG() is at line 464 in usb-ohci.h, which seems to be a linked-list
> > traversal failing to find an entry.
>
> So your "Subject:" is wrong? Which driver are you having problems with?
> usb-ohci.c or usb-uhci.c?

yes. sh*t. sorry :-/

its usb-ohci.

> What platform are you running this on, x86?

yes

> What devices do you have plugged in?

one alcatel usb speedtouch ADSL modem, using the 'user mode' driver.

> What were you doing when the BUG() call happened?

surfin' the net ;) it appears to occur randomly - its been fine the whole
day today, although less stressed than yesterday.

> Are there any kernel log entries before the BUG()?

nope.

> What is your .config?

I can mail it if necessary.

> What is the output of /proc/bus/usb/devices with your USB device plugged
> in?

bash-2.05$ cat /proc/bus/usb/devices
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB OHCI Root Hub
S: SerialNumber=c583b000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=06b9 ProdID=4061 Rev= 0.00
S: Manufacturer=ALCATEL
S: Product=Speed Touch USB
S: SerialNumber=0090D047C395
C:* #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=50ms
I: If#= 1 Alt= 0 #EPs= 0 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
I: If#= 1 Alt= 1 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
E: Ad=06(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=07(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=87(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I: If#= 1 Alt= 2 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
E: Ad=06(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms
E: Ad=07(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms
E: Ad=87(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I: If#= 1 Alt= 3 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=usbdevfs
E: Ad=06(O) Atr=02(Bulk) MxPS= 16 Ivl=0ms
E: Ad=07(O) Atr=02(Bulk) MxPS= 16 Ivl=0ms
E: Ad=87(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=05(O) Atr=02(Bulk) MxPS= 8 Ivl=0ms
E: Ad=85(I) Atr=02(Bulk) MxPS= 8 Ivl=0ms
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 0.00
S: Product=USB OHCI Root Hub
S: SerialNumber=c5839000
C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA
I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms
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