| Message ID | 7205ca7d3c5433214256df4672f7c1a49815a5a5.1710367570.git.daniel@makrotopia.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [net,1/2] net: mediatek: mtk_eth_soc: clear MAC_MCR_FORCE_LINK only when MAC is up | expand |
Hello: This series was applied to netdev/net.git (main) by David S. Miller <davem@davemloft.net>: On Wed, 13 Mar 2024 22:50:18 +0000 you wrote: > Clearing bit MAC_MCR_FORCE_LINK which forces the link down too early > can result in MAC ending up in a broken/blocked state. > > Fix this by handling this bit in the .mac_link_up and .mac_link_down > calls instead of in .mac_finish. > > Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support") > Suggested-by: Mason-cw Chang <Mason-cw.Chang@mediatek.com> > Signed-off-by: Daniel Golle <daniel@makrotopia.org> > > [...] Here is the summary with links: - [net,1/2] net: mediatek: mtk_eth_soc: clear MAC_MCR_FORCE_LINK only when MAC is up https://git.kernel.org/netdev/net/c/f1b85ef15a99 - [net,2/2] net: ethernet: mtk_eth_soc: fix PPE hanging issue https://git.kernel.org/netdev/net/c/ea80e3ed09ab You are awesome, thank you!
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index de123350bd46b..caa13b9cedff0 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -677,8 +677,7 @@ static int mtk_mac_finish(struct phylink_config *config, unsigned int mode, mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); mcr_new = mcr_cur; mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | - MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK | - MAC_MCR_RX_FIFO_CLR_DIS; + MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_RX_FIFO_CLR_DIS; /* Only update control register when needed! */ if (mcr_new != mcr_cur) @@ -694,7 +693,7 @@ static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode, phylink_config); u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); - mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN); + mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN | MAC_MCR_FORCE_LINK); mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); } @@ -803,7 +802,7 @@ static void mtk_mac_link_up(struct phylink_config *config, if (rx_pause) mcr |= MAC_MCR_FORCE_RX_FC; - mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; + mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN | MAC_MCR_FORCE_LINK; mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); }
Clearing bit MAC_MCR_FORCE_LINK which forces the link down too early can result in MAC ending up in a broken/blocked state. Fix this by handling this bit in the .mac_link_up and .mac_link_down calls instead of in .mac_finish. Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support") Suggested-by: Mason-cw Chang <Mason-cw.Chang@mediatek.com> Signed-off-by: Daniel Golle <daniel@makrotopia.org> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)