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| author | Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> | 2016-05-16 12:41:07 -0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-16 22:17:45 -0400 |
| commit | a8df35d45800c2af2b9bac04a8f9d4e426862e4d (patch) | |
| tree | 78a53c8552d30d443322aa563850d961845b65f3 | |
| parent | 73d9011c1f50ad3f82886d2187799acba1feb236 (diff) | |
| download | linux-a8df35d45800c2af2b9bac04a8f9d4e426862e4d.tar.bz2 | |
stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set
Commit f748be531d70 ("stmmac: support new GMAC4") reverted a previous fix
by mistake. This commit re-applies said fix:
commit dec2165ff38a99f937fe61875d102c6c8596c815
Author: Sonic Zhang <sonic.zhang@analog.com>
Date: Thu Jan 22 14:55:57 2015 +0800
stmmac: hardware TX COE doesn't work when force_thresh_dma_mode is set
Clear the TX COE bit when force_thresh_dma_mode is set even hardware
dma capability says support.
Tested on BF609.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tested on LPC4350 Hitex board.
Fixes: f748be531d70 ("stmmac: support new GMAC4")
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index fd5ab7bfdb76..eac45d0c75e2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3131,7 +3131,12 @@ static int stmmac_hw_init(struct stmmac_priv *priv) priv->plat->enh_desc = priv->dma_cap.enh_desc; priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up; - priv->plat->tx_coe = priv->dma_cap.tx_coe; + /* TXCOE doesn't work in thresh DMA mode */ + if (priv->plat->force_thresh_dma_mode) + priv->plat->tx_coe = 0; + else + priv->plat->tx_coe = priv->dma_cap.tx_coe; + /* In case of GMAC4 rx_coe is from HW cap register. */ priv->plat->rx_coe = priv->dma_cap.rx_coe; |