[PATCH v3 net-next 03/10] net: korina: Remove not needed cache flushes
From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Date: 2021-04-14 23:07:05
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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