Hi all,
I am currently working on an open-source project using linux 3.5.4 on
an i.MX25 board manufactured by Voipac.
I have been experiencing all sorts of USB issues that I have logged here:
http://pastebin.com/Ry6fdne5
As you will see, it varies from detecting a hub with 0 ports, failing
to initialise it or failing to mount a USB dongle attached to it.
After trying to get some help on KernelNewbies, I was advised to find
the consequence of the NULL pointer dereference (bullet point 1 from
pastebin link), which I did. I posted my first patch earlier "[PATCH]
USB: hub: Avoid NULL pointer dereference when hub doesn't have any
ports".
Now, I would like to get to the root cause/causes of these issues but
I would need your help. For example, I have no idea if a source not
delivering enough power could potentially lead to these kinds of
errors.
Any help or advice on ways to carry on my investigation would be
gratefully received.
Cheers,
David
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