usb: serial: silence all non-critical read errors

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commit aa8e22128b 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>

...

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Jeremiah Mahler 2015-01-11 05:42:06 -08:00 • committed by Luis Henriques

parent fcc9ecaa7d

commit 32ba655b60

1 changed files with 1 additions and 1 deletions

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drivers/usb/serial/generic.c

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