[PATCH] serial: imx: Fix DCD reading

[Fabio Estevam]

On Mon, Sep 26, 2016 at 11:09 AM, Uwe Kleine-König
<u.kleine-koenig at pengutronix.de> wrote:
> Hallo,
>
> On Mon, Sep 26, 2016 at 03:55:31PM +0200, Sascha Hauer wrote:
>> The USR2_DCDIN bit is tested for in register usr1. As the name
>> suggests the usr2 register should be used instead. This fixes
>> reading the Carrier detect status.
>>
>> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> Fixes: 90ebc4838666 ("serial: imx: repair and complete handshaking")
> Acked-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

Great, so it affects 4.5+ kernels and should probably have:

Cc: <stable at vger.kernel.org> # 4.5+