linux-kernel - Re: [PATCH] tty: serial: fsl_lpuart: Fix lpuart_flush

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Message-ID: <20191004225359.GE3817@lunn.ch>
Date:   Sat, 5 Oct 2019 00:53:59 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Andrey Smirnov <andrew.smirnov@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stefan Agner <stefan@...er.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Chris Healy <cphealy@...il.com>,
        Cory Tusar <cory.tusar@....aero>,
        Lucas Stach <l.stach@...gutronix.de>,
        Jiri Slaby <jslaby@...e.com>, linux-imx@....com,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tty: serial: fsl_lpuart: Fix lpuart_flush_buffer()

On Fri, Oct 04, 2019 at 02:55:37PM -0700, Andrey Smirnov wrote:
> Fix incorrect read-modify-write sequence in lpuart_flush_buffer() that
> was reading from UARTPFIFO and writing to UARTCFIFO instead of
> operating solely on the latter.
> 
> Fixes: 9bc19af9dacb ("tty: serial: fsl_lpuart: Flush HW FIFOs in .flush_buffer")
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>

Tested-by: Andrew Lunn <andrew@...n.ch>

    Andrew