* Problem resetting USB;downloading firmware
@ 2008-07-16 16:53 amruth
0 siblings, 0 replies; only message in thread
From: amruth @ 2008-07-16 16:53 UTC (permalink / raw)
To: linux-hotplug
> Hi
> I am developing driver based on TI 3410 chipset. After
> downloading firmware using host, the USB bus system needs
> to be reset. The reset works fine but I cannot use the my
> target device because interrupt_in_urb is null. I am using
> usb serial driver on top of ti driver. I can see ttyUSB0
> created. After I remove the plug from my host and reconnect
> the system, the device works to be fine. Can you please let
> me know what could be going on. Should I close the serial
> device after downloading firmware. Why hotplug works after
> removing from system. I have done
> ti_usb_3410_5052.hotplug at /etc/hotplug.d. Can I execute
> hotplug from command line and see what is going on. If you
> have come across similar problem, please let me know. What
> steps of reinitialisation needs to be done after
> downloading firmware, in terms of data structures like
> interrupt_in, endpoints etc or I can probe the device once
> again.
> Thanks
> Amruth p.v
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