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| author | Biao Huang <biao.huang@mediatek.com> | 2019-05-24 14:26:07 +0800 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2019-09-16 12:21:36 -0400 |
| commit | 44c4b5c10e6ede1f0e9c31c6da123c3f690dd651 (patch) | |
| tree | db5ec3e6fc24be0f46d87cd8c15e7b8b856b2305 | |
| parent | 706fa5c0bf0f9966becf80aff134e1677e2456cf (diff) | |
| download | linux-yocto-44c4b5c10e6ede1f0e9c31c6da123c3f690dd651.tar.gz linux-yocto-44c4b5c10e6ede1f0e9c31c6da123c3f690dd651.tar.bz2 linux-yocto-44c4b5c10e6ede1f0e9c31c6da123c3f690dd651.zip | |
net: stmmac: update rx tail pointer register to fix rx dma hang issue.
commit 4523a5611526709ec9b4e2574f1bb7818212651e upstream.
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: Paul Gortmaker <paul.gortmaker@windriver.com>
| -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 b756fc6a0532..5dd303212e28 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3298,6 +3298,7 @@ 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); } /** |