Re: Still some problems with UHCI driver in 2.4.5 on VIA chipsets

Dylan Griffiths (Dylan_G@bigfoot.com)
Fri, 22 Jun 2001 17:08:24 -0600

Johannes Erdfelt wrote:
> > I think this may be a problem in the dc2xx.o then, since uhci didn't reveal
> > any new messages.
>
> It's possible. Many cameras are touchy wrt to the commands it receives.
> If one is slightly wrong, some of them will just stop talking.

Yeah, looks like I get to see if I can debug the camera driver..

> Did you try with the usb-uhci driver as well?
>
> JE

Here's a transcript of a session with usb-uhci.o (vs uhci.o). It locks in a
way that I can't turn off the camera (have to pop batteries), which is a bit
worse than just uhci.o. On the plus side, it seemed a bit faster at a few
things.

usb.c: USB disconnect on device 1
usb.c: USB bus 1 deregistered
usb.c: USB disconnect on device 1
usb.c: USB bus 2 deregistered
usb-uhci.c: $Revision: 1.259 $ time 16:56:57 Jun 22 2001
usb-uhci.c: High bandwidth mode enabled
PCI: Found IRQ 5 for device 00:04.2
PCI: The same IRQ used for device 00:04.3
usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 5 for device 00:04.3
PCI: The same IRQ used for device 00:04.2
usb-uhci.c: USB UHCI at I/O 0xd000, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.251 Georg Acher, Deti Fliegl, Thomas Sailer, Roman
Weissgaerber
usb-uhci.c: USB Universal Host Controller Interface driver
hub.c: USB new device connect on bus1/2, assigned device number 2
dc2xx.c: USB Camera #0 connected, major/minor 180/80
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb_control/bulk_msg: timeout
usb-uhci.c: interrupt, status 3, frame# 1004
usb.c: USB disconnect on device 2
usb-uhci.c: interrupt, status 3, frame# 1997
usb-uhci.c: interrupt, status 3, frame# 949
usb-uhci.c: interrupt, status 3, frame# 1949
usb-uhci.c: interrupt, status 3, frame# 901
usb-uhci.c: interrupt, status 3, frame# 1901
dc2xx.c: USB Camera #0 disconnected

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