cns3xxx: minor ethernet driver cleanup

SVN-Revision: 35949

diff --git a/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c b/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c
index 4bf7a9888ae4c67a1315696a2483fd171f3ea066..7a5c44cad6c99b3de9cb4cd9f3ee045fd637aed2 100644 (file)
--- a/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c
+++ b/target/linux/cns3xxx/files/drivers/net/ethernet/cavium/cns3xxx_eth.c
@@ -286,8 +286,8 @@ struct sw {
        struct switch_regs __iomem *regs;
        struct napi_struct napi;
        struct cns3xxx_plat_info *plat;
-       struct _tx_ring *tx_ring;
-       struct _rx_ring *rx_ring;
+       struct _tx_ring tx_ring;
+       struct _rx_ring rx_ring;
        struct sk_buff *frag_first;
        struct sk_buff *frag_last;
 };
@@ -507,7 +507,7 @@ irqreturn_t eth_stat_irq(int irq, void *pdev)
 
 static void cns3xxx_alloc_rx_buf(struct sw *sw, int received)
 {
-       struct _rx_ring *rx_ring = sw->rx_ring;
+       struct _rx_ring *rx_ring = &sw->rx_ring;
        unsigned int i = rx_ring->alloc_index;
        struct rx_desc *desc = &(rx_ring)->desc[i];
        void *buf;
@@ -579,7 +579,7 @@ static void eth_check_num_used(struct _tx_ring *tx_ring)
 
 static void eth_complete_tx(struct sw *sw)
 {
-       struct _tx_ring *tx_ring = sw->tx_ring;
+       struct _tx_ring *tx_ring = &sw->tx_ring;
        struct tx_desc *desc;
        int i;
        int index;
@@ -614,7 +614,7 @@ static void eth_complete_tx(struct sw *sw)
 static int eth_poll(struct napi_struct *napi, int budget)
 {
        struct sw *sw = container_of(napi, struct sw, napi);
-       struct _rx_ring *rx_ring = sw->rx_ring;
+       struct _rx_ring *rx_ring = &sw->rx_ring;
        int received = 0;
        unsigned int length;
        unsigned int i = rx_ring->cur_index;
@@ -750,7 +750,7 @@ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
 {
        struct port *port = netdev_priv(dev);
        struct sw *sw = port->sw;
-       struct _tx_ring *tx_ring = sw->tx_ring;
+       struct _tx_ring *tx_ring = &sw->tx_ring;
        struct sk_buff *skb1;
        char pmap = (1 << port->id);
        int nr_frags = skb_shinfo(skb)->nr_frags;
@@ -877,8 +877,8 @@ static struct ethtool_ops cns3xxx_ethtool_ops = {
 static int init_rings(struct sw *sw)
 {
        int i;
-       struct _rx_ring *rx_ring = sw->rx_ring;
-       struct _tx_ring *tx_ring = sw->tx_ring;
+       struct _rx_ring *rx_ring = &sw->rx_ring;
+       struct _tx_ring *tx_ring = &sw->tx_ring;
 
        __raw_writel(0, &sw->regs->fs_dma_ctrl0);
        __raw_writel(TS_SUSPEND | FS_SUSPEND, &sw->regs->dma_auto_poll_cfg);
@@ -950,11 +950,11 @@ static int init_rings(struct sw *sw)
 static void destroy_rings(struct sw *sw)
 {
        int i;
-       if (sw->rx_ring->desc) {
+       if (sw->rx_ring.desc) {
                for (i = 0; i < RX_DESCS; i++) {
-                       struct _rx_ring *rx_ring = sw->rx_ring;
+                       struct _rx_ring *rx_ring = &sw->rx_ring;
                        struct rx_desc *desc = &(rx_ring)->desc[i];
-                       struct sk_buff *skb = sw->rx_ring->buff_tab[i];
+                       struct sk_buff *skb = sw->rx_ring.buff_tab[i];
 
                        if (!skb)
                                continue;
@@ -963,26 +963,26 @@ static void destroy_rings(struct sw *sw)
                                         DMA_FROM_DEVICE);
                        dev_kfree_skb(skb);
                }
-               dma_pool_free(rx_dma_pool, sw->rx_ring->desc, sw->rx_ring->phys_addr);
+               dma_pool_free(rx_dma_pool, sw->rx_ring.desc, sw->rx_ring.phys_addr);
                dma_pool_destroy(rx_dma_pool);
                rx_dma_pool = 0;
-               sw->rx_ring->desc = 0;
+               sw->rx_ring.desc = 0;
        }
-       if (sw->tx_ring->desc) {
+       if (sw->tx_ring.desc) {
                for (i = 0; i < TX_DESCS; i++) {
-                       struct _tx_ring *tx_ring = sw->tx_ring;
+                       struct _tx_ring *tx_ring = &sw->tx_ring;
                        struct tx_desc *desc = &(tx_ring)->desc[i];
-                       struct sk_buff *skb = sw->tx_ring->buff_tab[i];
+                       struct sk_buff *skb = sw->tx_ring.buff_tab[i];
                        if (skb) {
                                dma_unmap_single(NULL, desc->sdp,
                                        skb->len, DMA_TO_DEVICE);
                                dev_kfree_skb(skb);
                        }
                }
-               dma_pool_free(tx_dma_pool, sw->tx_ring->desc, sw->tx_ring->phys_addr);
+               dma_pool_free(tx_dma_pool, sw->tx_ring.desc, sw->tx_ring.phys_addr);
                dma_pool_destroy(tx_dma_pool);
                tx_dma_pool = 0;
-               sw->tx_ring->desc = 0;
+               sw->tx_ring.desc = 0;
        }
 }
 
@@ -1204,22 +1204,10 @@ static int eth_init_one(struct platform_device *pdev)
        __raw_writel(UNKNOWN_VLAN_TO_CPU |
                     CRC_STRIPPING, &sw->regs->mac_glob_cfg);
 
-       if (!(sw->rx_ring = kmalloc(sizeof(struct _rx_ring), GFP_KERNEL))) {
-               err = -ENOMEM;
-               goto err_free;
-       }
-       memset(sw->rx_ring, 0, sizeof(struct _rx_ring));
-
-       if (!(sw->tx_ring = kmalloc(sizeof(struct _tx_ring), GFP_KERNEL))) {
-               err = -ENOMEM;
-               goto err_free_rx;
-       }
-       memset(sw->tx_ring, 0, sizeof(struct _tx_ring));
-
        if ((err = init_rings(sw)) != 0) {
                destroy_rings(sw);
                err = -ENOMEM;
-               goto err_free_rings;
+               goto err_free;
        }
        platform_set_drvdata(pdev, napi_dev);
 
@@ -1291,10 +1279,6 @@ free_ports:
                        free_netdev(dev);
                }
        }
-err_free_rings:
-       kfree(sw->tx_ring);
-err_free_rx:
-       kfree(sw->rx_ring);
 err_free:
        free_netdev(napi_dev);
        return err;