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Date: Sun, 11 Jan 2015 05:42:06 -0800 From: Jeremiah Mahler <jmmahler@...il.com> To: Johan Hovold <johan@...nel.org> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, Jeremiah Mahler <jmmahler@...il.com> Subject: [PATCH v3 1/2] usb: serial: silence all non-critical read errors If a USB serial device is unplugged while there is an active program using the device it may 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 to silence these non-critical errors. Signed-off-by: Jeremiah Mahler <jmmahler@...il.com> --- drivers/usb/serial/generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 1bd1922..2d7207b 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -373,7 +373,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) __func__, urb->status); return; default: - dev_err(&port->dev, "%s - nonzero urb status: %d\n", + dev_dbg(&port->dev, "%s - nonzero urb status: %d\n", __func__, urb->status); goto resubmit; } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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