diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index e3861b21e776600fb721699c8ede4e62dc51f8fc..b72fa49eb257aad26d3b634ab81f6b36ad615239 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -609,9 +609,9 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 
 	acm->throttle = 0;
 
-	tasklet_schedule(&acm->urb_task);
 	set_bit(ASYNCB_INITIALIZED, &acm->port.flags);
 	rv = tty_port_block_til_ready(&acm->port, tty, filp);
+	tasklet_schedule(&acm->urb_task);
 done:
 	mutex_unlock(&acm->mutex);
 err_out: