Merge branch 'upstream'

[pandora-kernel.git] / arch / arm / kernel / irq.c

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 3284118..1d50d2b 100644 (file)
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -264,6 +264,7 @@ unlock:
 #endif
 #ifdef CONFIG_SMP
                show_ipi_list(p);
+               show_local_irqs(p);
 #endif
                seq_printf(p, "Err: %10lu\n", irq_err_count);
        }
@@ -683,8 +684,12 @@ int setup_irq(unsigned int irq, struct irqaction *new)
        spin_lock_irqsave(&irq_controller_lock, flags);
        p = &desc->action;
        if ((old = *p) != NULL) {
-               /* Can't share interrupts unless both agree to */
-               if (!(old->flags & new->flags & SA_SHIRQ)) {
+               /*
+                * Can't share interrupts unless both agree to and are
+                * the same type.
+                */
+               if (!(old->flags & new->flags & SA_SHIRQ) ||
+                   (~old->flags & new->flags) & SA_TRIGGER_MASK) {
                        spin_unlock_irqrestore(&irq_controller_lock, flags);
                        return -EBUSY;
                }
@@ -704,6 +709,13 @@ int setup_irq(unsigned int irq, struct irqaction *new)
                desc->running = 0;
                desc->pending = 0;
                desc->disable_depth = 1;
+
+               if (new->flags & SA_TRIGGER_MASK &&
+                   desc->chip->set_type) {
+                       unsigned int type = new->flags & SA_TRIGGER_MASK;
+                       desc->chip->set_type(irq, type);
+               }
+
                if (!desc->noautoenable) {
                        desc->disable_depth = 0;
                        desc->chip->unmask(irq);
@@ -995,7 +1007,7 @@ void __init init_irq_proc(void)
        struct proc_dir_entry *dir;
        int irq;
 
-       dir = proc_mkdir("irq", 0);
+       dir = proc_mkdir("irq", NULL);
        if (!dir)
                return;
 
@@ -1026,7 +1038,6 @@ void __init init_irq_proc(void)
 void __init init_IRQ(void)
 {
        struct irqdesc *desc;
-       extern void init_dma(void);
        int irq;
 
 #ifdef CONFIG_SMP
@@ -1040,7 +1051,6 @@ void __init init_IRQ(void)
        }
 
        init_arch_irq();
-       init_dma();
 }
 
 static int __init noirqdebug_setup(char *str)
@@ -1050,3 +1060,34 @@ static int __init noirqdebug_setup(char *str)
 }
 
 __setup("noirqdebug", noirqdebug_setup);
+
+#ifdef CONFIG_HOTPLUG_CPU
+/*
+ * The CPU has been marked offline.  Migrate IRQs off this CPU.  If
+ * the affinity settings do not allow other CPUs, force them onto any
+ * available CPU.
+ */
+void migrate_irqs(void)
+{
+       unsigned int i, cpu = smp_processor_id();
+
+       for (i = 0; i < NR_IRQS; i++) {
+               struct irqdesc *desc = irq_desc + i;
+
+               if (desc->cpu == cpu) {
+                       unsigned int newcpu = any_online_cpu(desc->affinity);
+
+                       if (newcpu == NR_CPUS) {
+                               if (printk_ratelimit())
+                                       printk(KERN_INFO "IRQ%u no longer affine to CPU%u\n",
+                                              i, cpu);
+
+                               cpus_setall(desc->affinity);
+                               newcpu = any_online_cpu(desc->affinity);
+                       }
+
+                       route_irq(desc, i, newcpu);
+               }
+       }
+}
+#endif /* CONFIG_HOTPLUG_CPU */