Problem with USB driver devu-ohci

QNX Newsgroups (Archives) qnx.newuser
1

I am using QNX Version 6.3. Following the execution of the command
“devu-ohci” in a terminal window, my system completely hangs. I am forced
to reboot the system. The usb port is an integrated USB 2.0 port.

2

Hi David.

Can you please try running “io-usb -d ehci -d ohci” instead and see if
that works any better for you?

io-usb is the new (introduced in 6.3) method of working with USB.
USB2.0 (ehci) is supported through this service.

Thanks,
-Jay.

david chivers wrote:

I am using QNX Version 6.3. Following the execution of the command
“devu-ohci” in a terminal window, my system completely hangs. I am forced
to reboot the system. The usb port is an integrated USB 2.0 port.

3

Hi Jay

Thanks for your response, I finally traced the problem to shared IRQs, it
seems that QNX does not like it. The IRQ was shared with the network
controller

David
Jay Greig wrote:

Hi David.

Can you please try running “io-usb -d ehci -d ohci” instead and see if
that works any better for you?

io-usb is the new (introduced in 6.3) method of working with USB.
USB2.0 (ehci) is supported through this service.

Thanks,
-Jay.

david chivers wrote:
I am using QNX Version 6.3. Following the execution of the command
“devu-ohci” in a terminal window, my system completely hangs. I am forced
to reboot the system. The usb port is an integrated USB 2.0 port.

4

Hi David.

We normally do work with shared interrupts (PCI, I’m assuming), but
we’ve seen problems in the past (and have fixed them). Which network
controller was it? Can you post a ‘pci -v’? I will try to reproduce
the problem here.

Thanks,
-Jay.

david chivers wrote:

Hi Jay

Thanks for your response, I finally traced the problem to shared IRQs, it
seems that QNX does not like it. The IRQ was shared with the network
controller

David
Jay Greig wrote:


Hi David.


Can you please try running “io-usb -d ehci -d ohci” instead and see if
that works any better for you?


io-usb is the new (introduced in 6.3) method of working with USB.
USB2.0 (ehci) is supported through this service.


Thanks,
-Jay.


david chivers wrote:

I am using QNX Version 6.3. Following the execution of the command
“devu-ohci” in a terminal window, my system completely hangs. I am forced
to reboot the system. The usb port is an integrated USB 2.0 port.




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