USB: cdc-acm: Do not log urb submission errors on disconnect
authorHans de Goede <hdegoede@redhat.com>
Sun, 14 Jan 2018 15:09:00 +0000 (16:09 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 3 Feb 2018 16:39:19 +0000 (17:39 +0100)
commitca7964983ca453dd9902c40171e93a69f21ee3ee
tree9b44374805fa87e60d51f7f9e3d9aeae939f9699
parentbfc372036b41fec5162c38c18aa824698c33b825
USB: cdc-acm: Do not log urb submission errors on disconnect

commit f0386c083c2ce85284dc0b419d7b89c8e567c09f upstream.

When disconnected sometimes the cdc-acm driver logs errors like these:

[20278.039417] cdc_acm 2-2:2.1: urb 9 failed submission with -19
[20278.042924] cdc_acm 2-2:2.1: urb 10 failed submission with -19
[20278.046449] cdc_acm 2-2:2.1: urb 11 failed submission with -19
[20278.049920] cdc_acm 2-2:2.1: urb 12 failed submission with -19
[20278.053442] cdc_acm 2-2:2.1: urb 13 failed submission with -19
[20278.056915] cdc_acm 2-2:2.1: urb 14 failed submission with -19
[20278.060418] cdc_acm 2-2:2.1: urb 15 failed submission with -19

Silence these by not logging errors when the result is -ENODEV.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c