linux-kernel - Re: [PATCH V3 1/3] USB: serial: f81232: clear overrun flag

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Message-ID: <20190329144051.GA12562@localhost>
Date:   Fri, 29 Mar 2019 15:40:51 +0100
From:   Johan Hovold <johan@...nel.org>
To:     "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com>
Cc:     peter_hong@...tek.com.tw, johan@...nel.org,
        gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Ji-Ze Hong (Peter Hong)" <hpeter+linux_kernel@...il.com>,
        Oliver Neukum <oneukum@...e.com>
Subject: Re: [PATCH V3 1/3] USB: serial: f81232: clear overrun flag

On Fri, Mar 29, 2019 at 04:28:40PM +0800, Ji-Ze Hong (Peter Hong) wrote:
> The F81232 will report data and LSR with bulk like following format:
> bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]...
> 
> LSR will auto clear frame/parity/break error flag when reading by H/W,
> but overrrun will only cleared when reading LSR. So this patch add a
> worker to read LSR when overrun and flush the worker on close() &
> suspend().
> 
> Cc: Oliver Neukum <oneukum@...e.com>
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@...il.com>
> ---

What changed since v2? Please always make sure to include a changelog
here below the cut-off line.

Thanks,
Johan