diff options
| author | Biao Huang <biao.huang@mediatek.com> | 2019-05-24 14:26:07 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-22 08:15:17 +0200 |
| commit | 9a3208b66cc1af8b1b7f54a8cbc9f758a682eb88 (patch) | |
| tree | 377e3a6edad8e6a28e5a97539d690588e159dead /drivers/net/ethernet | |
| parent | 3fbcef3350ab6a3ad8503da2c7f5b1ac777dfe80 (diff) | |
net: stmmac: update rx tail pointer register to fix rx dma hang issue.
[ Upstream commit 4523a5611526709ec9b4e2574f1bb7818212651e ]
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 <biao.huang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/ethernet')
| -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 50c00822b2d8..45e64d71a93f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3319,6 +3319,7 @@ 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); } /** |