If a USB serial device (e.g. /dev/ttyUSB0) with an active program is unplugged, a bunch of -EPROTO (71) error messages will be produced by usb_serial_generic_read_bulk_callback() as it tries to resubmit the request.
usb_serial_generic_read_bulk_callback - nonzero urb status: -71 Keep the same functionality, resubmit after an -EPROTO error, but change message log level to debug instead of error so they are handled quietly by default. Signed-off-by: Jeremiah Mahler <[email protected]> --- drivers/usb/serial/generic.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 1bd1922..98fe718 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -372,6 +372,10 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) dev_err(&port->dev, "%s - urb stopped: %d\n", __func__, urb->status); return; + case -EPROTO: + dev_dbg(&port->dev, "%s - urb resubmit: %d\n", + __func__, urb->status); + goto resubmit; default: dev_err(&port->dev, "%s - nonzero urb status: %d\n", __func__, urb->status); -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
