Re: [Libusb-devel] error calling usb_bulk_write() -> error submitting URB: Device or resource busy

[Charles L. <cl...@gm...>]

On 7/14/06, Lloyd Rochester <Llo...@co...> wrote:
> Charles,
>     Good insight, I do have kernel version 2.4.17-1.  However, when I look at
> /proc/bus/usb/devices everything looks good EXCEPT driver=usbtest. That seems
> like a name I could have put somewhere but I don't think it is my driver.  I do
> call usb_claim_interface() in my code, and I get no errors, however, I must not
> be claiming the driver back from usbtest.

can you post before-and-after excerpts from /proc/bus/usb/devices?

I don't remember when kernel support for the
usb_detach_kernel_driver_np() function went in, but 2.4.17 is fairly
old, so that may not work for you.

>  I do also see a whole bunch of
> activity from dmesg about usbtest and usbdevfs which mostly shows usbtest
> taking over.  How do I claim the driver for my own?

It sounds like you're doing the right thing from userspace, but it's
been a while since I messed with usbtest. If it's a module, you could
rmmod it. If not, you probably want to remove it from the kernel
config.

-- 
- Charles Lepple