cdc-acm: surpress misleading message

During the entry intro suspend a misleading message can be
printed. Surpress it by checking the specific error.

Signed-off-by: Oliver Neukum <oneukum@suse.de>0
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 58241ec1e91d..43cb05863fac 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -360,7 +360,7 @@ static void acm_ctrl_irq(struct urb *urb)
         }
 exit:
         retval = usb_submit_urb(urb, GFP_ATOMIC);
-        if (retval)
+        if (retval && retval != -EPERM)
                 dev_err(&acm->control->dev, "%s - usb_submit_urb failed: %d\n",
                                                         __func__, retval);
 }