[PATCH v2 01/16] ARM: introduce common set_auxcr/get_auxcr functions

[Will Deacon]

On Thu, Jan 24, 2013 at 06:27:44AM +0000, Nicolas Pitre wrote:
> From: Rob Herring <rob.herring at calxeda.com>
> 
> Move the private set_auxcr/get_auxcr functions from
> drivers/cpuidle/cpuidle-calxeda.c so they can be used across platforms.
> 
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> Cc: Russell King <linux at arm.linux.org.uk>
> Acked-by: Tony Lindgren <tony at atomide.com>
> Signed-off-by: Nicolas Pitre <nico at linaro.org>
> ---
>  arch/arm/include/asm/cp15.h       | 14 ++++++++++++++
>  drivers/cpuidle/cpuidle-calxeda.c | 14 --------------
>  2 files changed, 14 insertions(+), 14 deletions(-)
> 
> diff --git a/arch/arm/include/asm/cp15.h b/arch/arm/include/asm/cp15.h
> index 5ef4d8015a..ef0094abf2 100644
> --- a/arch/arm/include/asm/cp15.h
> +++ b/arch/arm/include/asm/cp15.h
> @@ -59,6 +59,20 @@ static inline void set_cr(unsigned int val)
>  	isb();
>  }
>  
> +static inline unsigned int get_auxcr(void)
> +{
> +	unsigned int val;
> +	asm("mrc p15, 0, %0, c1, c0, 1	@ get AUXCR" : "=r" (val) : : "cc");
> +	return val;
> +}
> +
> +static inline void set_auxcr(unsigned int val)
> +{
> +	asm volatile("mcr p15, 0, %0, c1, c0, 1	@ set AUXCR"
> +	  : : "r" (val) : "cc");
> +	isb();
> +}

Oh no! It's the return of the magic "cc" clobber! Could we have an extra
patch to remove those please (since this is just a move)?

Will