linux-kernel - Re: OOPS after connection Droids MuIn USB display

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Message-ID: <1304698067.4118.4.camel@poseidon>
Date:	Fri, 06 May 2011 18:07:47 +0200
From:	Erik Slagter <erik@...gter.name>
To:	Maxin John <maxin.john@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: OOPS after connection Droids MuIn USB display

> I have included some checks for "data_interface" since
> "usb_ifnum_to_if" could return NULL.
> Could you please check by applying this patch ?

In the meantime I've done a lot of bisection and inserting printk's
(needs a reboot every time, that's why I didn't react yet).

I think I can tell even a bit more than this patch will. I already found
out that the device appears to have no data connection but does have a
control connection. The lack of data connection seems to yield the NULL.
I will now test with data_connection forced to be equal to
control_connection, because apparently some devices actually work with
only connection, maybe this is one of them.

Will have more details later.

Thank you for your interest.

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