Messages in this thread Patch in this message | | | From | Jisheng Zhang <> | Subject | [PATCH] net: stmmac: don't stop RXC during LPI | Date | Sun, 23 Jan 2022 22:12:45 +0800 |
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I met can't receive rx pkt issue with below steps: 0.plug in ethernet cable then boot normal and get ip from dhcp server 1.quickly hotplug out then hotplug in the ethernet cable 2.trigger the dhcp client to renew lease
tcpdump shows that the request tx pkt is sent out successfully, but the mac can't receive the rx pkt.
The issue can easily be reproduced on platforms with PHY_POLL external phy. If we don't allow the phy to stop the RXC during LPI, the issue is gone. I think it's unsafe to stop the RXC during LPI because the mac needs RXC clock to support RX logic.
And the 2nd param clk_stop_enable of phy_init_eee() is a bool, so use false instead of 0.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 6708ca2aa4f7..92a9b0b226b1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -1162,7 +1162,7 @@ static void stmmac_mac_link_up(struct phylink_config *config, stmmac_mac_set(priv, priv->ioaddr, true); if (phy && priv->dma_cap.eee) { - priv->eee_active = phy_init_eee(phy, 1) >= 0; + priv->eee_active = phy_init_eee(phy, false) >= 0; priv->eee_enabled = stmmac_eee_init(priv); priv->tx_lpi_enabled = priv->eee_enabled; stmmac_set_eee_pls(priv, priv->hw, true); -- 2.34.1
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