linux-kernel - Re: [PATCH v1] tty: serial: 8250_core: restore the LCR register in set

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Message-ID: <CAJJ77WthYSoA745Nbcqf_dVfN+ydO1LpCVTRDS6xaZMm0zLSmw@mail.gmail.com>
Date:	Tue, 21 Oct 2014 12:15:24 +0530
From:	Sudhir Sreedharan <ssreedharan@...sta.com>
To:	Kevin Hilman <khilman@...nel.org>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-serial@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	lkml <linux-kernel@...r.kernel.org>,
	Olof Johansson <olof@...om.net>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH v1] tty: serial: 8250_core: restore the LCR register in set_sleep

On Mon, Oct 20, 2014 at 8:31 PM, Kevin Hilman <khilman@...nel.org> wrote:
> Sudhir Sreedharan <ssreedharan@...sta.com> writes:
>
>> In ST16650V2 based serial uarts, while initalizing the PM state,
>> LCR registers are being initialized to 0 in serial8250_set_sleep().
>> If console port is already initialized and being used, this will
>> throws garbage in the console.
>>
>> Signed-off-by: Sudhir Sreedharan <ssreedharan@...sta.com>
>
> Tested-by: Kevin Hilman <khilman@...aro.org>
>
> I boot tested this on a bunch of ARM boards and don't see any
> more failures/regressions.

Thanks Kevin
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