4.4-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -377,7 +377,7 @@ static int acm_submit_read_urb(struct ac
res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&acm->data->dev, "%s - usb_submit_urb failed: %d\n", __func__, res);