[PATCH] ARM: mvebu: Use a CR_C constant instead of a hard-coded one

[Gregory CLEMENT]

 On lun., août 10 2015, Gregory CLEMENT <gregory.clement at free-electrons.com> wrote:

> Fix the armada_370_xp_pmsu_idle_enter() function to use a CR_C
> constant instead of a hard-coded constant in the assembly part.
> This clean-up was suggested by Russell King.
>
> Signed-off-by: Gregory CLEMENT <gregory.clement at free-electrons.com>

Applied on mvebu/cleanup

> ---
> Hi,
>
> this clean-up is not for 4.2 neither for 4.3 (the rc6 had just been
> released), but for 4.4. I send it now to not forget it.
>
> Gregory
>
>  arch/arm/mach-mvebu/pmsu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
> index 4f4e22206ae5..8efb83cea83d 100644
> --- a/arch/arm/mach-mvebu/pmsu.c
> +++ b/arch/arm/mach-mvebu/pmsu.c
> @@ -296,11 +296,11 @@ int armada_370_xp_pmsu_idle_enter(unsigned long deepidle)
>  	/* Test the CR_C bit and set it if it was cleared */
>  	asm volatile(
>  	"mrc	p15, 0, r0, c1, c0, 0 \n\t"
> -	"tst	r0, #(1 << 2) \n\t"
> +	"tst	r0, %0 \n\t"
>  	"orreq	r0, r0, #(1 << 2) \n\t"
>  	"mcreq	p15, 0, r0, c1, c0, 0 \n\t"
>  	"isb	"
> -	: : : "r0");
> +	: : "Ir" (CR_C) : "r0");
>  
>  	pr_debug("Failed to suspend the system\n");

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com