On Tue, May 21, 2013 at 06:15:48PM +0200, Stephen Warren wrote: > On 05/21/2013 04:13 AM, Joseph Lo wrote: > > The Tegra114 could hotplug the CPU0, but the common cpu_disable didn't > > support that. Adding a Tegra specific cpu_disable function for it. > > > > Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx> > > > diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c > > > +int tegra_cpu_disable(unsigned int cpu) > > +{ > > + switch (tegra_chip_id) { > > + case TEGRA114: > > + return 0; > > + default: > > + return cpu == 0 ? -EPERM : 0; > > + } > > +} > > Do we expect all/most future chips to support hotplug of CPU0? Or at > least, fewer chips to have the restriction than not? If so, it might be Yes. I think we can safely assume future chips will support hotplugging CPU0. > more forward-looking to write that as: > > if (tegra_chip_id == TEGRA30) > return cpu == 0 ? -EPERM : 0; > Also Tegra20 doesn't support hotplugging CPU0? Cheers, Peter. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html