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path: root/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
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Diffstat (limited to 'drivers/net/ethernet/xilinx/xilinx_axienet_main.c')
-rw-r--r--drivers/net/ethernet/xilinx/xilinx_axienet_main.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 1ec65feebb9e..4bfdf8c7ada0 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -26,6 +26,7 @@
26#include <linux/netdevice.h> 26#include <linux/netdevice.h>
27#include <linux/of_mdio.h> 27#include <linux/of_mdio.h>
28#include <linux/of_platform.h> 28#include <linux/of_platform.h>
29#include <linux/of_irq.h>
29#include <linux/of_address.h> 30#include <linux/of_address.h>
30#include <linux/skbuff.h> 31#include <linux/skbuff.h>
31#include <linux/spinlock.h> 32#include <linux/spinlock.h>
@@ -600,7 +601,8 @@ static void axienet_start_xmit_done(struct net_device *ndev)
600 size += status & XAXIDMA_BD_STS_ACTUAL_LEN_MASK; 601 size += status & XAXIDMA_BD_STS_ACTUAL_LEN_MASK;
601 packets++; 602 packets++;
602 603
603 lp->tx_bd_ci = ++lp->tx_bd_ci % TX_BD_NUM; 604 ++lp->tx_bd_ci;
605 lp->tx_bd_ci %= TX_BD_NUM;
604 cur_p = &lp->tx_bd_v[lp->tx_bd_ci]; 606 cur_p = &lp->tx_bd_v[lp->tx_bd_ci];
605 status = cur_p->status; 607 status = cur_p->status;
606 } 608 }
@@ -686,7 +688,8 @@ static int axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
686 skb_headlen(skb), DMA_TO_DEVICE); 688 skb_headlen(skb), DMA_TO_DEVICE);
687 689
688 for (ii = 0; ii < num_frag; ii++) { 690 for (ii = 0; ii < num_frag; ii++) {
689 lp->tx_bd_tail = ++lp->tx_bd_tail % TX_BD_NUM; 691 ++lp->tx_bd_tail;
692 lp->tx_bd_tail %= TX_BD_NUM;
690 cur_p = &lp->tx_bd_v[lp->tx_bd_tail]; 693 cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
691 frag = &skb_shinfo(skb)->frags[ii]; 694 frag = &skb_shinfo(skb)->frags[ii];
692 cur_p->phys = dma_map_single(ndev->dev.parent, 695 cur_p->phys = dma_map_single(ndev->dev.parent,
@@ -702,7 +705,8 @@ static int axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
702 tail_p = lp->tx_bd_p + sizeof(*lp->tx_bd_v) * lp->tx_bd_tail; 705 tail_p = lp->tx_bd_p + sizeof(*lp->tx_bd_v) * lp->tx_bd_tail;
703 /* Start the transfer */ 706 /* Start the transfer */
704 axienet_dma_out32(lp, XAXIDMA_TX_TDESC_OFFSET, tail_p); 707 axienet_dma_out32(lp, XAXIDMA_TX_TDESC_OFFSET, tail_p);
705 lp->tx_bd_tail = ++lp->tx_bd_tail % TX_BD_NUM; 708 ++lp->tx_bd_tail;
709 lp->tx_bd_tail %= TX_BD_NUM;
706 710
707 return NETDEV_TX_OK; 711 return NETDEV_TX_OK;
708} 712}
@@ -774,7 +778,8 @@ static void axienet_recv(struct net_device *ndev)
774 cur_p->status = 0; 778 cur_p->status = 0;
775 cur_p->sw_id_offset = (u32) new_skb; 779 cur_p->sw_id_offset = (u32) new_skb;
776 780
777 lp->rx_bd_ci = ++lp->rx_bd_ci % RX_BD_NUM; 781 ++lp->rx_bd_ci;
782 lp->rx_bd_ci %= RX_BD_NUM;
778 cur_p = &lp->rx_bd_v[lp->rx_bd_ci]; 783 cur_p = &lp->rx_bd_v[lp->rx_bd_ci];
779 } 784 }
780 785