diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 904efb6..3bd4226 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1514,18 +1514,15 @@
 	struct acm *acm = usb_get_intfdata(intf);
 	int cnt;
 
-	if (PMSG_IS_AUTO(message)) {
-		int b;
-
-		spin_lock_irq(&acm->write_lock);
-		b = acm->transmitting;
-		spin_unlock_irq(&acm->write_lock);
-		if (b)
-			return -EBUSY;
-	}
-
 	spin_lock_irq(&acm->read_lock);
 	spin_lock(&acm->write_lock);
+	if (PMSG_IS_AUTO(message)) {
+		if (acm->transmitting) {
+			spin_unlock(&acm->write_lock);
+			spin_unlock_irq(&acm->read_lock);
+			return -EBUSY;
+		}
+	}
 	cnt = acm->susp_count++;
 	spin_unlock(&acm->write_lock);
 	spin_unlock_irq(&acm->read_lock);