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path: root/drivers/net/ethernet/cadence/macb.c
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Diffstat (limited to 'drivers/net/ethernet/cadence/macb.c')
-rw-r--r--drivers/net/ethernet/cadence/macb.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 0e489bb82456..538544a7c642 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -991,6 +991,7 @@ static inline void macb_init_rx_ring(struct macb *bp)
addr += bp->rx_buffer_size;
}
bp->rx_ring[bp->rx_ring_size - 1].addr |= MACB_BIT(RX_WRAP);
+ bp->rx_tail = 0;
}
static int macb_rx(struct macb *bp, int budget)
@@ -1172,6 +1173,7 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id)
if (status & MACB_BIT(RXUBR)) {
ctrl = macb_readl(bp, NCR);
macb_writel(bp, NCR, ctrl & ~MACB_BIT(RE));
+ wmb();
macb_writel(bp, NCR, ctrl | MACB_BIT(RE));
if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE)
@@ -1736,8 +1738,6 @@ static void macb_init_rings(struct macb *bp)
bp->queues[0].tx_head = 0;
bp->queues[0].tx_tail = 0;
bp->queues[0].tx_ring[bp->tx_ring_size - 1].ctrl |= MACB_BIT(TX_WRAP);
-
- bp->rx_tail = 0;
}
static void macb_reset_hw(struct macb *bp)
@@ -2943,6 +2943,7 @@ static irqreturn_t at91ether_interrupt(int irq, void *dev_id)
if (intstatus & MACB_BIT(RXUBR)) {
ctl = macb_readl(lp, NCR);
macb_writel(lp, NCR, ctl & ~MACB_BIT(RE));
+ wmb();
macb_writel(lp, NCR, ctl | MACB_BIT(RE));
}