Re: unable to register with usb core

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Sun, 16 Dec 2007, ashish mahamuni wrote:

> Hi All,
> 
> I am writing usb filter. I want to capture all urbs
> that are generated.(same like usbmon)
> I've used usb_mon_register(); function from hcd.h.
> But it returns non zero value.
> What are the possible reasons that I unable to
> register with usb core?

There can be only one monitor.  usbmon registers first, so your driver
is unable to register.

Why do you need a separate filter anyway?  Why don't you simply use 
usbmon?

Alan Stern


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