moxa: fix the error handling in moxart_mac_probe()
This patch fix the error handling in moxart_mac_probe():
- return -ENOMEM in some memory alloc fail cases
- add missing free_netdev() in the error handling case
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c
index bd1a2d2..ea54d95 100644
--- a/drivers/net/ethernet/moxa/moxart_ether.c
+++ b/drivers/net/ethernet/moxa/moxart_ether.c
@@ -448,7 +448,8 @@
irq = irq_of_parse_and_map(node, 0);
if (irq <= 0) {
netdev_err(ndev, "irq_of_parse_and_map failed\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto irq_map_fail;
}
priv = netdev_priv(ndev);
@@ -472,24 +473,32 @@
priv->tx_desc_base = dma_alloc_coherent(NULL, TX_REG_DESC_SIZE *
TX_DESC_NUM, &priv->tx_base,
GFP_DMA | GFP_KERNEL);
- if (priv->tx_desc_base == NULL)
+ if (priv->tx_desc_base == NULL) {
+ ret = -ENOMEM;
goto init_fail;
+ }
priv->rx_desc_base = dma_alloc_coherent(NULL, RX_REG_DESC_SIZE *
RX_DESC_NUM, &priv->rx_base,
GFP_DMA | GFP_KERNEL);
- if (priv->rx_desc_base == NULL)
+ if (priv->rx_desc_base == NULL) {
+ ret = -ENOMEM;
goto init_fail;
+ }
priv->tx_buf_base = kmalloc(priv->tx_buf_size * TX_DESC_NUM,
GFP_ATOMIC);
- if (!priv->tx_buf_base)
+ if (!priv->tx_buf_base) {
+ ret = -ENOMEM;
goto init_fail;
+ }
priv->rx_buf_base = kmalloc(priv->rx_buf_size * RX_DESC_NUM,
GFP_ATOMIC);
- if (!priv->rx_buf_base)
+ if (!priv->rx_buf_base) {
+ ret = -ENOMEM;
goto init_fail;
+ }
platform_set_drvdata(pdev, ndev);
@@ -522,7 +531,8 @@
init_fail:
netdev_err(ndev, "init failed\n");
moxart_mac_free_memory(ndev);
-
+irq_map_fail:
+ free_netdev(ndev);
return ret;
}