Commit aa8e2212 authored by Jeremiah Mahler's avatar Jeremiah Mahler Committed by Johan Hovold

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: default avatarJeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
parent 32a4bf2e
...@@ -373,7 +373,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) ...@@ -373,7 +373,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb)
__func__, urb->status); __func__, urb->status);
return; return;
default: default:
dev_err(&port->dev, "%s - nonzero urb status: %d\n", dev_dbg(&port->dev, "%s - nonzero urb status: %d\n",
__func__, urb->status); __func__, urb->status);
goto resubmit; goto resubmit;
} }
......
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