diff options
| author | Biao Huang <[email protected]> | 2019-05-24 14:26:07 +0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2019-05-25 11:02:31 -0700 |
| commit | 4523a5611526709ec9b4e2574f1bb7818212651e (patch) | |
| tree | 455c9ffde4eb9bb8be47c2698a33b4bdd6601f94 | |
| parent | 425aa0e1d01513437668fa3d4a971168bbaa8515 (diff) | |
net: stmmac: update rx tail pointer register to fix rx dma hang issue.
Currently we will not update the receive descriptor tail pointer in
stmmac_rx_refill. Rx dma will think no available descriptors and stop
once received packets exceed DMA_RX_SIZE, so that the rx only test will fail.
Update the receive tail pointer in stmmac_rx_refill to add more descriptors
to the rx channel, so packets can be received continually
Fixes: 54139cf3bb33 ("net: stmmac: adding multiple buffers for rx")
Signed-off-by: Biao Huang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 2a1052704885..bc93c355f403 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3338,6 +3338,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue) entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE); } rx_q->dirty_rx = entry; + stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, queue); } /** |