diff options
| author | Weifeng Voon <weifeng.voon@intel.com> | 2019-05-21 13:38:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-04 08:02:33 +0200 |
| commit | a1a926fc68c7610b59df314e8fd549c3a8bad147 (patch) | |
| tree | 8991ac8bea1c44e13ae5f71b4d1682adc40e30f4 | |
| parent | 1db0bcc27c78e9b28ca02bf39d645adf0c1acd76 (diff) | |
net: stmmac: dma channel control register need to be init first
stmmac_init_chan() needs to be called before stmmac_init_rx_chan() and
stmmac_init_tx_chan(). This is because if PBLx8 is to be used,
"DMA_CH(#i)_Control.PBLx8" needs to be set before programming
"DMA_CH(#i)_TX_Control.TxPBL" and "DMA_CH(#i)_RX_Control.RxPBL".
Fixes: 47f2a9ce527a ("net: stmmac: dma channel init prepared for multiple queues")
Reviewed-by: Zhang, Baoli <baoli.zhang@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Weifeng Voon <weifeng.voon@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5debe93ea4eb..50c00822b2d8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2195,6 +2195,10 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv) if (priv->plat->axi) stmmac_axi(priv, priv->ioaddr, priv->plat->axi); + /* DMA CSR Channel configuration */ + for (chan = 0; chan < dma_csr_ch; chan++) + stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan); + /* DMA RX Channel Configuration */ for (chan = 0; chan < rx_channels_count; chan++) { rx_q = &priv->rx_queue[chan]; @@ -2220,10 +2224,6 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv) tx_q->tx_tail_addr, chan); } - /* DMA CSR Channel configuration */ - for (chan = 0; chan < dma_csr_ch; chan++) - stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan); - return ret; } |