Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH 3.16.y-ckt 041/180] usb: serial: silence all non-critical read errors | Date | Thu, 7 May 2015 10:44:10 +0100 |
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3.16.7-ckt11 -stable review patch. If anyone has any objections, please let me know.
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From: Jeremiah Mahler <jmmahler@gmail.com>
commit aa8e22128b40590b291cd13512098bf258a7e6c5 upstream.
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@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.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 904ab353ecf2..c44b911937e8 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -374,7 +374,7 @@ 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; }
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