linux-kernel - Re: [PATCH V2] tty: serial: imx: disable UCR4_OREN in .stop

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Date:   Wed, 24 Nov 2021 10:59:05 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Sherry Sun <sherry.sun@....com>
Cc:     jirislaby@...nel.org, u.kleine-koenig@...gutronix.de,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-imx@....com
Subject: Re: [PATCH V2] tty: serial: imx: disable UCR4_OREN in .stop_rx()
 instead of .shutdown()

On Tue, Nov 23, 2021 at 06:51:22PM +0800, Sherry Sun wrote:
> From: Fugang Duan <fugang.duan@....com>
> 
> Disable the UCR4_OREN bit in .stop_rx() before the uart receiver is disabled
> maybe better than in the .shutdown() function.

Why is it better?  What does this "fix"?

thanks,

greg k-h