linux-kernel - Re: [PATCH v2 1/2] usb: serial: handle -EPROTO quietly in generic_read

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Message-ID: <54956C6A.4060703@cogentembedded.com>
Date:	Sat, 20 Dec 2014 15:32:42 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Jeremiah Mahler <jmmahler@...il.com>,
	Johan Hovold <johan@...nel.org>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 1/2] usb: serial: handle -EPROTO quietly in generic_read_bulk

Hello.

On 12/20/2014 12:11 PM, Jeremiah Mahler wrote:

> If a USB serial device driver, which is built using the generic serial
> driver, is unplugged while there is an active program using the device,

    Driver is unplugged? :-)

> it will spam the logs with -EPROTO (71) messages as it attempts to
> retry.

> Most serial usb drivers (metro-usb, pl2303, mos7840, ...) only output
> these messages for debugging.  The generic driver treats these as
> errors.

> Change the default output for the generic serial driver from error to
> debug.

> Signed-off-by: Jeremiah Mahler <jmmahler@...il.com>

[...]

WBR, Sergei

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