Re: [PATCH RFC net-next 4/5] net: stmmac: remove _RE and _TE in (start|stop)_(tx|rx)() methods

[Furong Xu <0x1207@gmail.com>]

On Thu, 27 Feb 2025 15:05:17 +0000
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk> wrote:

> Remove fiddling with _TE and _RE in the GMAC control register in the
> start_tx/stop_tx/start_rx/stop_rx() methods as this should be handled
> by phylink and not during initialisation.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> ---
>  drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c   |  8 --------
>  drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 12 ------------
>  2 files changed, 20 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> index 57c03d491774..61584b569be7 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> @@ -50,10 +50,6 @@ void dwmac4_dma_start_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
>  
>  	value |= DMA_CONTROL_ST;
>  	writel(value, ioaddr + DMA_CHAN_TX_CONTROL(dwmac4_addrs, chan));
> -
> -	value = readl(ioaddr + GMAC_CONFIG);
> -	value |= GMAC_CONFIG_TE;
> -	writel(value, ioaddr + GMAC_CONFIG);
>  }
>  
>  void dwmac4_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
> @@ -77,10 +73,6 @@ void dwmac4_dma_start_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
>  	value |= DMA_CONTROL_SR;
>  
>  	writel(value, ioaddr + DMA_CHAN_RX_CONTROL(dwmac4_addrs, chan));
> -
> -	value = readl(ioaddr + GMAC_CONFIG);
> -	value |= GMAC_CONFIG_RE;
> -	writel(value, ioaddr + GMAC_CONFIG);
>  }
>  
>  void dwmac4_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> index 7840bc403788..cba12edc1477 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> @@ -288,10 +288,6 @@ static void dwxgmac2_dma_start_tx(struct stmmac_priv *priv,
>  	value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
>  	value |= XGMAC_TXST;
>  	writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
> -
> -	value = readl(ioaddr + XGMAC_TX_CONFIG);
> -	value |= XGMAC_CONFIG_TE;
> -	writel(value, ioaddr + XGMAC_TX_CONFIG);
>  }
>  
>  static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
> @@ -302,10 +298,6 @@ static void dwxgmac2_dma_stop_tx(struct stmmac_priv *priv, void __iomem *ioaddr,
>  	value = readl(ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
>  	value &= ~XGMAC_TXST;
>  	writel(value, ioaddr + XGMAC_DMA_CH_TX_CONTROL(chan));
> -
> -	value = readl(ioaddr + XGMAC_TX_CONFIG);
> -	value &= ~XGMAC_CONFIG_TE;
> -	writel(value, ioaddr + XGMAC_TX_CONFIG);
>  }
>  
>  static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv,
> @@ -316,10 +308,6 @@ static void dwxgmac2_dma_start_rx(struct stmmac_priv *priv,
>  	value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
>  	value |= XGMAC_RXST;
>  	writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
> -
> -	value = readl(ioaddr + XGMAC_RX_CONFIG);
> -	value |= XGMAC_CONFIG_RE;
> -	writel(value, ioaddr + XGMAC_RX_CONFIG);
>  }
>  
>  static void dwxgmac2_dma_stop_rx(struct stmmac_priv *priv, void __iomem *ioaddr,

Tested-by: Furong Xu <0x1207@gmail.com>