linux-kernel - Re: [PATCH v2 02/19] ARM: at91/at91x40: remove use of at91_sys

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Date:	Thu, 23 Feb 2012 09:22:39 +1100
From:	Ryan Mallon <rmallon@...il.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
CC:	plagnioj@...osoft.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux@....linux.org.uk
Subject: Re: [PATCH v2 02/19] ARM: at91/at91x40: remove use of at91_sys_read/write

On 22/02/12 20:39, Nicolas Ferre wrote:

> From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
> Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
> ---
>  arch/arm/mach-at91/at91x40.c              |    2 +-
>  arch/arm/mach-at91/at91x40_time.c         |   28 +++++++++++++++++-----------
>  arch/arm/mach-at91/include/mach/at91x40.h |   18 +++++++++---------
>  3 files changed, 27 insertions(+), 21 deletions(-)
> 
> diff --git a/arch/arm/mach-at91/at91x40.c b/arch/arm/mach-at91/at91x40.c
> index 0154b7f..5400a1d 100644
> --- a/arch/arm/mach-at91/at91x40.c
> +++ b/arch/arm/mach-at91/at91x40.c
> @@ -44,7 +44,7 @@ static void at91x40_idle(void)
>  	 * Disable the processor clock.  The processor will be automatically
>  	 * re-enabled by an interrupt or by a reset.
>  	 */
> -	at91_sys_write(AT91_PS_CR, AT91_PS_CR_CPU);
> +	__raw_writel(AT91_PS_CR_CPU, AT91_PS_CR);


This doesn't seem to be equivalent, at91_sys_write does:

  void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
  __raw_writel(value, addr + reg_offset);

and this patch doesn't redefine AT91_PS_CR. Was it broken before this
patch? What am I missing?

~Ryan
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