[POWERPC] Implement arch disable/enable irq hooks.

[deliverable/linux.git] / arch / powerpc / kernel / time.c

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 85cf317c9069d97440cb6417c8d22820f10789a9..5cd3db5cae415198653a8d1a4e4bce846a7a40ef 100644 (file)
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -629,6 +629,45 @@ void wakeup_decrementer(void)
        set_dec(ticks);
 }
 
+#ifdef CONFIG_SUSPEND
+void generic_suspend_disable_irqs(void)
+{
+       preempt_disable();
+
+       /* Disable the decrementer, so that it doesn't interfere
+        * with suspending.
+        */
+
+       set_dec(0x7fffffff);
+       local_irq_disable();
+       set_dec(0x7fffffff);
+}
+
+void generic_suspend_enable_irqs(void)
+{
+       wakeup_decrementer();
+
+       local_irq_enable();
+       preempt_enable();
+}
+
+/* Overrides the weak version in kernel/power/main.c */
+void arch_suspend_disable_irqs(void)
+{
+       if (ppc_md.suspend_disable_irqs)
+               ppc_md.suspend_disable_irqs();
+       generic_suspend_disable_irqs();
+}
+
+/* Overrides the weak version in kernel/power/main.c */
+void arch_suspend_enable_irqs(void)
+{
+       generic_suspend_enable_irqs();
+       if (ppc_md.suspend_enable_irqs)
+               ppc_md.suspend_enable_irqs();
+}
+#endif
+
 #ifdef CONFIG_SMP
 void __init smp_space_timers(unsigned int max_cpus)
 {