diff --git a/net/can/isotp.c b/net/can/isotp.c
index ef6644b..e87e60c 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -892,7 +892,9 @@ static int isotp_sendmsg(struct kiocb *iocb, struct socket *sock,
 			return -EAGAIN;
 
 		/* wait for complete transmission of current pdu */
-		wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+		err = wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+		if (err)
+			return err;
 	}
 
 	if (!size || size > MAX_MSG_LENGTH)