linux-kernel - Re: [PATCH V9 4/4] USB: serial: f81232: implement break control

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Message-ID: <20190507091636.GE4333@localhost>
Date:   Tue, 7 May 2019 11:16:36 +0200
From:   Johan Hovold <johan@...nel.org>
To:     "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com>
Cc:     Johan Hovold <johan@...nel.org>, peter_hong@...tek.com.tw,
        gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Ji-Ze Hong (Peter Hong)" <hpeter+linux_kernel@...il.com>
Subject: Re: [PATCH V9 4/4] USB: serial: f81232: implement break control

On Mon, May 06, 2019 at 10:52:27AM +0800, Ji-Ze Hong (Peter Hong) wrote:

> > You forgot to update shadow_lcr here so the line settings would be
> > corrupted (e.g set to 5 bit words) whenever a break is signalled.
> > 
> > Did you not test this version of the patch?
> > 
> > I added the missing update, but please test the code that's in my
> > usb-next branch in a minute and confirm everything works as expected.
> > 
> 
> Thanks for mention and patch the lost parts. I had only tested the
> break signal and forgot to test full LCR. I'll add it to my test items
> and it tested well on new usb-next branch after your fix.

Thanks for confirming!

> BTW, Should I disable break control when port close ?

Yes, that would be good even if many tty drivers currently fail to do
so.

Johan