Re: [PATCH 08+09/24] ARM: ixp4xx: use __iomem pointers for MMIO

From: Arnd Bergmann
Date: Tue Sep 18 2012 - 17:25:47 EST


On Tuesday 18 September 2012, Krzysztof Halasa wrote:
> > @@ -51,7 +52,7 @@ static inline u32 ixp4xx_read_feature_bits(void)
> >
> > static inline void ixp4xx_write_feature_bits(u32 value)
> > {
> > - *IXP4XX_EXP_CFG2 = ~value;
> > + __raw_writel(~cpu_to_le32(value), IXP4XX_EXP_CFG2);
> > }
>
> The EXP_CFG2 register is already in host order, no need for
> cpu_to_le32() as the replaced code clearly shows.
>
> Can you merge both IXP4xx parts (in the two patches) and fix the above,
> please? Thanks.

Thanks for pointing this out, that was a mistake on my end, because I first
tried to convert to writel, with byteswap and then made up my mind and used
__raw_writel instead because it seemed silly to do two byteswaps.

Arnd
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