1 files changed, 23 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1b97e13657e5..977ee3adaf2d 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -298,6 +298,16 @@ static int __devinit finish_node_interrupts(struct device_node *np,
         int i, j, n, sense;
         unsigned int *irq, virq;
         struct device_node *ic;
+        int trace = 0;
+
+        //#define TRACE(fmt...) do { if (trace) { printk(fmt); mdelay(1000); } } while(0)
+#define TRACE(fmt...)
+
+        if (!strcmp(np->name, "smu-doorbell"))
+                trace = 1;
+
+        TRACE("Finishing SMU doorbell ! num_interrupt_controllers = %d\n",
+              num_interrupt_controllers);
 
         if (num_interrupt_controllers == 0) {
                 /*
@@ -332,11 +342,12 @@ static int __devinit finish_node_interrupts(struct device_node *np,
         }
 
         ints = (unsigned int *) get_property(np, "interrupts", &intlen);
+        TRACE("ints=%p, intlen=%d\n", ints, intlen);
         if (ints == NULL)
                 return 0;
         intrcells = prom_n_intr_cells(np);
         intlen /= intrcells * sizeof(unsigned int);
-
+        TRACE("intrcells=%d, new intlen=%d\n", intrcells, intlen);
         np->intrs = prom_alloc(intlen * sizeof(*(np->intrs)), mem_start);
         if (!np->intrs)
                 return -ENOMEM;
@@ -347,6 +358,7 @@ static int __devinit finish_node_interrupts(struct device_node *np,
         intrcount = 0;
         for (i = 0; i < intlen; ++i, ints += intrcells) {
                 n = map_interrupt(&irq, &ic, np, ints, intrcells);
+                TRACE("map, irq=%d, ic=%p, n=%d\n", irq, ic, n);
                 if (n <= 0)
                         continue;
 
@@ -357,6 +369,7 @@ static int __devinit finish_node_interrupts(struct device_node *np,
                         np->intrs[intrcount].sense = map_isa_senses[sense];
                 } else {
                         virq = virt_irq_create_mapping(irq[0]);
+                        TRACE("virq=%d\n", virq);
 #ifdef CONFIG_PPC64
                         if (virq == NO_IRQ) {
                                 printk(KERN_CRIT "Could not allocate interrupt"
@@ -366,6 +379,12 @@ static int __devinit finish_node_interrupts(struct device_node *np,
 #endif
                         np->intrs[intrcount].line = irq_offset_up(virq);
                         sense = (n > 1)? (irq[1] & 3): 1;
+
+                        /* Apple uses bits in there in a different way, let's
+                         * only keep the real sense bit on macs
+                         */
+                        if (_machine == PLATFORM_POWERMAC)
+                                sense &= 0x1;
                         np->intrs[intrcount].sense = map_mpic_senses[sense];
                 }
 
@@ -375,12 +394,13 @@ static int __devinit finish_node_interrupts(struct device_node *np,
                         char *name = get_property(ic->parent, "name", NULL);
                         if (name && !strcmp(name, "u3"))
                                 np->intrs[intrcount].line += 128;
-                        else if (!(name && !strcmp(name, "mac-io")))
+                        else if (!(name && (!strcmp(name, "mac-io") ||
+                                            !strcmp(name, "u4"))))
                                 /* ignore other cascaded controllers, such as
                                    the k2-sata-root */
                                 break;
                 }
-#endif
+#endif /* CONFIG_PPC64 */
                 if (n > 2) {
                         printk("hmmm, got %d intr cells for %s:", n,
                                np->full_name);