linux-kernel - Re: [PATCH 2/7] serial: imx: move log from error to debug type

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Date:   Mon, 3 Jul 2017 08:50:05 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Romain Perier <romain.perier@...labora.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Nandor Han <nandor.han@...com>,
        linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/7] serial: imx: move log from error to debug type

On Fri, Jun 30, 2017 at 02:04:41PM +0200, Romain Perier wrote:
> From: Nandor Han <nandor.han@...com>
> 
> During DMA startup we have a data race condition since UART port can
> receive data that can generate different type of errors.
> 
> This is not necessarily an error since DMA didn't yet started. The
> situation is minimized but still present even if we try to clear up the
> error before starting the DMA.
> 
> Therefore changing the log to debug type we avoid having "false" error
> messages.

This doesn't look right. You say the message "DMA transaction error." is
wrong sometimes and so hide it a bit by using dev_dbg instead of
dev_err.

I don't like that.

Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |