Re: [PATCH net-next 4/6] r8169: add ERI functions

From: Francois Romieu
Date: Tue Jul 05 2011 - 15:09:53 EST


Hayes Wang <hayeswang@xxxxxxxxxxx> :
[...]
> @@ -1046,6 +1046,49 @@ static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
> return value;
> }
>
> +static
> +void rtl_eri_write(void __iomem *ioaddr, int addr, u32 mask, u32 val, int type)
> +{
> + unsigned int i;
> +
> + BUG_ON((addr & 3) || (mask == 0));
> + RTL_W32(ERIDR, val);
> + RTL_W32(ERIAR, ERIAR_WRITE_CMD | type | mask | addr);
> +
> + for (i = 0; i < 100; i++) {
> + udelay(100);
> + if (!(RTL_R32(ERIAR) & ERIAR_FLAG))
> + break;

I'd rather reverse those if possible : implicit posted write flushing read,
then udelay.

--
Ueimor
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