diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-06 10:26:30 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-12-06 10:26:48 +0100 |
| commit | 75e75cbd55183ff12459666c0a1d3e71fe1481ab (patch) | |
| tree | a1dc32cc055770736397f9cf9b68f9e176184943 /drivers/net/ethernet/cadence/macb.c | |
| parent | 58309befa82d81f6e9dc36a92d2a339ef2144535 (diff) | |
| parent | 197aa6ed522cc44710687d3b02dd4e4573991416 (diff) | |
Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
Backmerge v4.9-rc8 to get at
commit e94bd1736f1f60e916a85a80c0b0ebeaae36cce5
Author: Michel Dänzer <michel.daenzer@amd.com>
Date: Wed Nov 30 17:30:01 2016 +0900
drm: Don't call drm_for_each_crtc with a non-KMS driver
so I can apply Michel's follow-up patch.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/net/ethernet/cadence/macb.c')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index b32444a3ed79..ec09fcece711 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -975,6 +975,7 @@ static inline void macb_init_rx_ring(struct macb *bp) addr += bp->rx_buffer_size; } bp->rx_ring[RX_RING_SIZE - 1].addr |= MACB_BIT(RX_WRAP); + bp->rx_tail = 0; } static int macb_rx(struct macb *bp, int budget) @@ -1156,6 +1157,7 @@ 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) @@ -1616,8 +1618,6 @@ 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[TX_RING_SIZE - 1].ctrl |= MACB_BIT(TX_WRAP); - - bp->rx_tail = 0; } static void macb_reset_hw(struct macb *bp) @@ -2673,6 +2673,12 @@ static int at91ether_start_xmit(struct sk_buff *skb, struct net_device *dev) lp->skb_length = skb->len; lp->skb_physaddr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(NULL, lp->skb_physaddr)) { + dev_kfree_skb_any(skb); + dev->stats.tx_dropped++; + netdev_err(dev, "%s: DMA mapping error\n", __func__); + return NETDEV_TX_OK; + } /* Set address of the data in the Transmit Address register */ macb_writel(lp, TAR, lp->skb_physaddr); @@ -2764,6 +2770,7 @@ 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)); } |