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    Subject[PATCH v3 net-next 03/10] net: korina: Remove not needed cache flushes
    Date
    Descriptors are mapped uncached so there is no need to do any cache
    handling for them.

    Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
    ---
    drivers/net/ethernet/korina.c | 6 ------
    1 file changed, 6 deletions(-)

    diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
    index 6bef5d590ebe..408cb2dedb95 100644
    --- a/drivers/net/ethernet/korina.c
    +++ b/drivers/net/ethernet/korina.c
    @@ -231,7 +231,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
    dma_cache_wback((u32)skb->data, skb->len);

    /* Setup the transmit descriptor. */
    - dma_cache_inv((u32) td, sizeof(*td));
    td->ca = CPHYSADDR(skb->data);
    chain_prev = (lp->tx_chain_tail - 1) & KORINA_TDS_MASK;
    chain_next = (lp->tx_chain_tail + 1) & KORINA_TDS_MASK;
    @@ -284,7 +283,6 @@ static int korina_send_packet(struct sk_buff *skb, struct net_device *dev)
    lp->tx_chain_tail = chain_next;
    }
    }
    - dma_cache_wback((u32) td, sizeof(*td));

    netif_trans_update(dev);
    spin_unlock_irqrestore(&lp->lock, flags);
    @@ -371,8 +369,6 @@ static int korina_rx(struct net_device *dev, int limit)
    u32 devcs, pkt_len, dmas;
    int count;

    - dma_cache_inv((u32)rd, sizeof(*rd));
    -
    for (count = 0; count < limit; count++) {
    skb = lp->rx_skb[lp->rx_next_done];
    skb_new = NULL;
    @@ -451,7 +447,6 @@ static int korina_rx(struct net_device *dev, int limit)
    ~DMA_DESC_COD;

    lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
    - dma_cache_wback((u32)rd, sizeof(*rd));
    rd = &lp->rd_ring[lp->rx_next_done];
    writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
    }
    @@ -466,7 +461,6 @@ static int korina_rx(struct net_device *dev, int limit)
    rd->devcs = 0;
    skb = lp->rx_skb[lp->rx_next_done];
    rd->ca = CPHYSADDR(skb->data);
    - dma_cache_wback((u32)rd, sizeof(*rd));
    korina_chain_rx(lp, rd);
    }

    --
    2.29.2
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