Re: usb_bulk_msg kernel hangs

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On Fri, 16 Apr 2010, Jeremy Ramer wrote:

> >> I have traced the position of the crash to be somewhere inside
> >> usb_bulk_msg().
> >
> > You're sure it isn't somewhere in your driver following the call to
> > usb_bulk_msg()?
> 
> Yes, I have a USB analyzer and have found that the USB read does not
> even hit the USB bus. Traces that I added immediately after the
> function never occur, even with long delays to ensure time for the
> messages to be written out.

Then are you sure the crash doesn't occur _before_ the call to 
usb_bulk_msg()?

Alan Stern

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