mirror of https://gitee.com/openkylin/linux.git
net: stmmac: dwmac4: fix flow control issue
Current dwmac4_flow_ctrl will not clear
GMAC_RX_FLOW_CTRL_RFE/GMAC_RX_FLOW_CTRL_RFE bits,
so MAC hw will keep flow control on although expecting
flow control off by ethtool. Add codes to fix it.
Fixes: 477286b53f
("stmmac: add GMAC4 core support")
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
d2facb4b39
commit
ee326fd01e
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@ -479,8 +479,9 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
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if (fc & FLOW_RX) {
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pr_debug("\tReceive Flow-Control ON\n");
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flow |= GMAC_RX_FLOW_CTRL_RFE;
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writel(flow, ioaddr + GMAC_RX_FLOW_CTRL);
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}
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writel(flow, ioaddr + GMAC_RX_FLOW_CTRL);
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if (fc & FLOW_TX) {
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pr_debug("\tTransmit Flow-Control ON\n");
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@ -488,7 +489,7 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
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pr_debug("\tduplex mode: PAUSE %d\n", pause_time);
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for (queue = 0; queue < tx_cnt; queue++) {
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flow |= GMAC_TX_FLOW_CTRL_TFE;
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flow = GMAC_TX_FLOW_CTRL_TFE;
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if (duplex)
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flow |=
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@ -496,6 +497,9 @@ static void dwmac4_flow_ctrl(struct mac_device_info *hw, unsigned int duplex,
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writel(flow, ioaddr + GMAC_QX_TX_FLOW_CTRL(queue));
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}
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} else {
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for (queue = 0; queue < tx_cnt; queue++)
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writel(0, ioaddr + GMAC_QX_TX_FLOW_CTRL(queue));
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}
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}
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