Re: [PATCH] net: stmmac: add drop transmit status feature

[David Miller]

From: Joao Pinto <joao.pi...@synopsys.com>
Date: Tue, 11 Apr 2017 15:44:10 +0100

> +static void dwmac4_enable_tx_drop(struct mac_device_info *hw)
> +{
> +     void __iomem *ioaddr = hw->pcsr;
> +     u32 value = readl(ioaddr + MTL_OPERATION_MODE);
> +
> +     value &= ~MTL_OPERATION_DTXSTS;
> +     value |= MTL_OPERATION_DTXSTS;

I think the mask is unnecessary, just simply set the bit.