From: Johan Hovold <jhovold@gmail.com>
To: Mike Remski <mremski@mutualink.net>
Cc: Johan Hovold <jhovold@gmail.com>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: ftdi_sio BUG: NULL pointer dereference
Date: Mon, 2 Jun 2014 17:40:36 +0200 [thread overview]
Message-ID: <20140602154036.GA8662@localhost> (raw)
In-Reply-To: <538C953B.9020304@mutualink.net>
[ Please avoid top-posting. ]
On Mon, Jun 02, 2014 at 11:16:11AM -0400, Mike Remski wrote:
> Thanks Johan, that's why I looked at the cross references for ftdi_sio.c
> over on
> http://lxr.free-electrons.com/source/drivers/usb/serial/ftdi_sio.c,
> latest version it's showing is 3.14. It appears that the ftdi_sio code
> is largely the same as in 2.6.32, particularly in the
> ftdi_set_max_packet_size() function.
Lots of things have changed since v2.6.32 and not just in the driver
itself but in all the infrastructure it relies on.
> I'm trying to verify if the "number of endpoints is 0" is a valid
> situation.
No, that is not normal, but it should not crash the driver if it's a
hardware issue. What is the lsusb -v output of your device (make sure
the ftdi_sio driver isn't loaded when connecting the device).
And what happens if you plug it into a machine running a recent kernel?
Thanks,
Johan
next prev parent reply other threads:[~2014-06-02 15:41 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-02 14:25 ftdi_sio BUG: NULL pointer dereference Mike Remski
2014-06-02 14:33 ` Johan Hovold
2014-06-02 15:16 ` Mike Remski
2014-06-02 15:40 ` Johan Hovold [this message]
2014-06-02 16:02 ` Mike Remski
2014-06-02 16:20 ` Johan Hovold
2014-06-02 16:24 ` Mike Remski
2014-06-02 16:49 ` Johan Hovold
2014-06-02 17:11 ` Mike Remski
2014-06-02 17:46 ` Johan Hovold
2014-06-02 17:50 ` Mike Remski
2014-06-03 10:17 ` Mike Remski
2014-06-04 14:19 ` Johan Hovold
2014-06-04 14:29 ` Mike Remski
2014-06-04 14:52 ` Johan Hovold
2014-06-04 14:54 ` Mike Remski
2014-06-04 14:55 ` Mike Remski
2014-06-04 15:09 ` Johan Hovold
2014-06-04 15:12 ` Mike Remski
2014-06-04 15:41 ` Mike Remski
2014-06-04 16:00 ` Johan Hovold
2014-06-04 16:13 ` Mike Remski
2014-06-04 17:05 ` Mike Remski
2014-06-05 7:10 ` Johan Hovold
2014-06-02 16:09 ` Mike Remski
2014-06-02 16:23 ` Greg KH
2014-06-02 16:26 ` Mike Remski
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