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USB: cdc-acm: Do not log urb submission errors on disconnect
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> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -425,7 +425,7 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
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res = usb_submit_urb(acm->read_urbs[index], mem_flags);
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if (res) {
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if (res != -EPERM) {
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if (res != -EPERM && res != -ENODEV) {
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dev_err(&acm->data->dev,
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"urb %d failed submission with %d\n",
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index, res);
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