[PATCH net 4/8] net: bcmgenet: clean up RX NAPI on bcmgenet_init_rx_queues failure

bcmgenet_init_rx_ring() registers a NAPI instance for each RX ring via
netif_napi_add(). If bcmgenet_init_rx_queues() fails while initializing
subsequent rings, bcmgenet_init_dma() frees the RX buffers and page pools
but fails to clean up already registered NAPI instances with
bcmgenet_fini_rx_napi(). This leaves stale NAPI structs on the net_device
napi_list.

Call bcmgenet_fini_rx_napi() in the error handling path of
bcmgenet_init_dma() when bcmgenet_init_rx_queues() fails.

Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Assisted-by: LLM
Co-authored-by: Cursor [off-list ref]
Change-Id: I45982e0e198a44f3f56b1300f462870462b81108
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index bfb74dca55d6..ef155a170fa6 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c

@@ -3167,6 +3167,7 @@ static int bcmgenet_init_dma(struct bcmgenet_priv *priv, bool flush_rx)
 	ret = bcmgenet_init_rx_queues(priv->dev);
 	if (ret) {
 		netdev_err(priv->dev, "failed to initialize Rx queues\n");
+		bcmgenet_fini_rx_napi(priv);
 		bcmgenet_free_rx_buffers(priv);
 		bcmgenet_destroy_rx_page_pools(priv);
 		kfree(priv->rx_cbs);

-- 
2.34.1