[PATCH 2/5] ARM: tegra20: clocks: add CPU low-power function into tegra_cpu_car_ops

Joseph Lo josephl at nvidia.com
Mon Dec 3 23:28:47 EST 2012


On Tue, 2012-12-04 at 02:20 +0800, Stephen Warren wrote:
> On 12/02/2012 08:00 PM, Joseph Lo wrote:
> > Add suspend, resume and rail_off_ready API into tegra_cpu_car_ops. These
> > functions were used for CPU powered-down state maintenance.
> 
> > diff --git a/arch/arm/mach-tegra/tegra20_clocks.c b/arch/arm/mach-tegra/tegra20_clocks.c
> 
> > +static bool tegra20_cpu_rail_off_ready(void)
> 
> > +	if ((cpu_rst_status & 0x2) != 0x2)
> > +		return false;
> > +
> > +	return true;
> > +}
> 
> Perhaps simplify that to:
> 
> return cpu_rst_status & 2;
> 
> or perhaps if that generates an int->bool performance warning:
> 
> return !!(cpu_rst_status & 2);

OK. Will do this.

Thanks,
Joseph





More information about the linux-arm-kernel mailing list