diff options
| -rw-r--r-- | arch/arm/mach-tegra/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/hotplug.c | 11 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/platsmp.c | 1 |
3 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/common.h b/arch/arm/mach-tegra/common.h index 5900cc44f780..32f8eb3fe344 100644 --- a/arch/arm/mach-tegra/common.h +++ b/arch/arm/mach-tegra/common.h @@ -2,3 +2,4 @@ extern struct smp_operations tegra_smp_ops; extern int tegra_cpu_kill(unsigned int cpu); extern void tegra_cpu_die(unsigned int cpu); +extern int tegra_cpu_disable(unsigned int cpu); diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c index d07f152b275f..a52c10e0a857 100644 --- a/arch/arm/mach-tegra/hotplug.c +++ b/arch/arm/mach-tegra/hotplug.c @@ -46,6 +46,17 @@ void __ref tegra_cpu_die(unsigned int cpu) BUG(); } +int tegra_cpu_disable(unsigned int cpu) +{ + switch (tegra_chip_id) { + case TEGRA20: + case TEGRA30: + return cpu == 0 ? -EPERM : 0; + default: + return 0; + } +} + void __init tegra_hotplug_init(void) { if (!IS_ENABLED(CONFIG_HOTPLUG_CPU)) diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c index 554aedc98c9f..24db4ac428ae 100644 --- a/arch/arm/mach-tegra/platsmp.c +++ b/arch/arm/mach-tegra/platsmp.c @@ -196,5 +196,6 @@ struct smp_operations tegra_smp_ops __initdata = { #ifdef CONFIG_HOTPLUG_CPU .cpu_kill = tegra_cpu_kill, .cpu_die = tegra_cpu_die, + .cpu_disable = tegra_cpu_disable, #endif }; |