linux-kernel - Re: [PATCH v2 1/4] USB: mxu11x0: fix memory leak on usb

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Date:	Sat, 30 Jan 2016 18:40:30 +0100
From:	Mathieu OTHACEHE <m.othacehe@...il.com>
To:	Johan Hovold <johan@...nel.org>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 1/4] USB: mxu11x0: fix memory leak on usb_serial
 private data

On Mon, Jan 25, 2016 at 01:01:59PM +0100, Johan Hovold wrote:
> On Mon, Jan 04, 2016 at 07:49:36PM +0100, Mathieu OTHACEHE wrote:
> > On nominal execution, private data allocated on port_probe and attach
> > are never freed. Add port_remove and release callbacks to free them
> > respectively.
> > 
> > Signed-off-by: Mathieu OTHACEHE <m.othacehe@...il.com>
> 
> I've applied this one for 4.5-rc2 now.
> 
> I want to take a closer look at the last three patches and it seems they
> should wait for 4.6 anyway. I did notice that the vendor driver also
> sends double START/OPEN commands at open by the way. Perhaps ask Moxa
> why that is before we remove them?
> 
> Thanks,
> Johan

Hi Johan,

I asked MOXA about this double opening. I also noticed that the
mainline driver ti_usb_3410_5052 uses the same double opening pattern.
And, MOXA UPORT 11x0 serie is based on TUSB3410 chip of TI.

So, I also emailed TI, and the authors of ti_usb_3410_5052 driver.

I keep you informed,

Thank you

Mathieu