Re: [PATCH] net: stmmac: fix incorrect bit set in gmac4 mdio addr register

[Joao Pinto]

Às 8:07 PM de 12/27/2016, Kweh, Hock Leong escreveu:
> From: "Kweh, Hock Leong" <hock.leong.kweh@xxxxxxxxx>
> 
> Fixing the gmac4 mdio write access to use MII_GMAC4_WRITE only instead of
> OR together with MII_WRITE.
> 
> Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@xxxxxxxxx>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index fda01f7..b0344c2 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -116,7 +116,7 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
>  	unsigned int mii_address = priv->hw->mii.addr;
>  	unsigned int mii_data = priv->hw->mii.data;
>  
> -	u32 value = MII_WRITE | MII_BUSY;
> +	u32 value = MII_BUSY;
>  
>  	value |= (phyaddr << priv->hw->mii.addr_shift)
>  		& priv->hw->mii.addr_mask;
> @@ -126,6 +126,8 @@ static int stmmac_mdio_write(struct mii_bus *bus, int phyaddr, int phyreg,
>  		& priv->hw->mii.clk_csr_mask;
>  	if (priv->plat->has_gmac4)
>  		value |= MII_GMAC4_WRITE;
> +	else
> +		value |= MII_WRITE;
>  
>  	/* Wait until any existing MII operation is complete */
>  	if (stmmac_mdio_busy_wait(priv->ioaddr, mii_address))
> 

Acked-By: Joao Pinto <jpinto@xxxxxxxxxxxx>