Hello Łukasz Stelmach, The patch a97c69ba4f30: "net: ax88796c: ASIX AX88796C SPI Ethernet Adapter Driver" from Oct 20, 2021, leads to the following Smatch static checker warning: drivers/net/ethernet/asix/ax88796c_main.c:391 ax88796c_start_xmit() warn: test_bit() takes a bit number drivers/net/ethernet/asix/ax88796c_main.c 382 static int 383 ax88796c_start_xmit(struct sk_buff *skb, struct net_device *ndev) 384 { 385 struct ax88796c_device *ax_local = to_ax88796c_device(ndev); 386 387 skb_queue_tail(&ax_local->tx_wait_q, skb); 388 if (skb_queue_len(&ax_local->tx_wait_q) > TX_QUEUE_HIGH_WATER) 389 netif_stop_queue(ndev); 390 --> 391 set_bit(EVENT_TX, &ax_local->flags); EVENT_TX is BIT(1) so this ends up being a double BIT(BIT(1));. Which is fine because it seems to be done consistently. But probably it should be: #define EVENT_INTR 0 #define EVENT_TX 1 #define EVENT_SET_MULTI 2 392 schedule_work(&ax_local->ax_work); 393 394 return NETDEV_TX_OK; 395 } regards, dan carpenter