diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2022-04-15 09:26:00 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-04-15 09:26:00 +0200 |
| commit | edf45f007a31e86738f6be3065591ddad94477d1 (patch) | |
| tree | 2805eeead7a03344a2b1185314d791a65fe15dc1 /drivers/net/ethernet/cadence | |
| parent | caf968b483351d8825e68b06d77de5eb618aeb64 (diff) | |
| parent | d20339fa93e9810fcf87518bdd62e44f62bb64ee (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Diffstat (limited to 'drivers/net/ethernet/cadence')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 5555daee6f13..a5140d4d3baf 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -1654,6 +1654,7 @@ static void macb_tx_restart(struct macb_queue *queue) unsigned int head = queue->tx_head; unsigned int tail = queue->tx_tail; struct macb *bp = queue->bp; + unsigned int head_idx, tbqp; if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) queue_writel(queue, ISR, MACB_BIT(TXUBR)); @@ -1661,6 +1662,13 @@ static void macb_tx_restart(struct macb_queue *queue) if (head == tail) return; + tbqp = queue_readl(queue, TBQP) / macb_dma_desc_get_size(bp); + tbqp = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, tbqp)); + head_idx = macb_adj_dma_desc_idx(bp, macb_tx_ring_wrap(bp, head)); + + if (tbqp == head_idx) + return; + macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART)); } |