[PATCH] ARM: highbank: retry wfi on reset request

Rob Herring robherring2 at gmail.com
Mon Oct 29 13:22:56 EDT 2012


On 10/25/2012 10:20 PM, Rob Herring wrote:
> From: Rob Herring <rob.herring at calxeda.com>
> 
> In some cases, an interrupt can occur and prevent cause failure to enter
> wfi. This causes reset to hang. Retrying the wfi should be enough to
> prevent reset from hanging.
> 
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> ---

Arnd, Olof,

Can you please apply this for 3.7?

Rob

>  arch/arm/mach-highbank/system.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c
> index 82c2723..86e37cd 100644
> --- a/arch/arm/mach-highbank/system.c
> +++ b/arch/arm/mach-highbank/system.c
> @@ -28,6 +28,7 @@ void highbank_restart(char mode, const char *cmd)
>  		hignbank_set_pwr_soft_reset();
>  
>  	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
> -	cpu_do_idle();
> +	while (1)
> +		cpu_do_idle();
>  }
>  
> 




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