linux-kernel - Re: [PATCH 08+09/24] ARM: ixp4xx: use _

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Date:	Tue, 18 Sep 2012 22:12:46 +0200
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Will Deacon <will.deacon@....com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Nicolas Pitre <nico@...aro.org>, Imre Kaloz <kaloz@...nwrt.org>
Subject: Re: [PATCH 08+09/24] ARM: ixp4xx: use __iomem pointers for MMIO

Actually, there are some minor problems here (both patches merged,
ixp4xx only):

Arnd Bergmann <arnd@...db.de> writes:

> --- a/arch/arm/mach-ixp4xx/include/mach/cpu.h
> +++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h
> @@ -37,7 +38,7 @@
>  
>  static inline u32 ixp4xx_read_feature_bits(void)
>  {
> -	u32 val = ~*IXP4XX_EXP_CFG2;
> +	u32 val = ~__raw_readl(IXP4XX_EXP_CFG2);
>  

This is all fine, but

> @@ -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.
-- 
Krzysztof Halasa
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