On 09/03/2014 03:43 AM, Johan Hovold wrote:
Again, please do not top post.
https://en.wikipedia.org/wiki/Posting_style#Top-posting
On Tue, Sep 02, 2014 at 03:43:52PM -0500, Sergio De León wrote:
Hi Johan
Here are the debug logs you asked me
* dmesg output while connecting the device without dynamic debug
* dmesg output while connecting the device with dynamic debug
* .../dynamic_debug/control active rules for cdc_acm
* dmesg output with dyndbg while opening the port, writting to the port
and closing the port.
I don't see anything obviously wrong in these logs.
Perhaps the device simply isn't cdc-compliant (some bits of the vendor
driver certainly indicates that) despite what the vendor claims.
Are you using the vendor driver or a generic cdc-acm driver on Windows?
I don't have time to look into this in a few days, but would you be able
to test patches that I send you? Possibly some diagnostic patches to
determine if cdc-acm can be used, and if not, a dedicated usb serial
driver?
If so, you could compile your own mainline (or stable 3.16) kernel in
the mean time so you have something to test the patches with.
Thanks,
Johan
Oh thanks for the clarification about top-posting (actually I didn't see
the message the first time).
I'm using the vendor driver on WinXP I'll test later the generic driver
of Win7 later (and if it has the WinXP). The vendor driver for linux
Vizzini (1) seems that it's quite buggy and some developers have already
given up trying to fix it (2) though there's people trying to patch it
(3) (I haven't tried this one, I've just found it).
Ok, I'll install the latest mainline (no RC) 3.16.1-031601-generic from
kernel.ubuntu.com. Then download the source to have some code to work
with and apply the patches.
Thank you for your time
Sergio
1. http://www.exar.com/common/content/default.aspx?id=10296
2. http://comments.gmane.org/gmane.linux.kernel.next/24133 it says he
was cleaning up the code, but I wonder if it would get rid of the kernel
panic on runtime. This is a discussion about the pre ">=3.5" version
http://markmail.org/message/kvx4uiesrfpz472m.
3. https://github.com/ardje/vizzini
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