1 files changed, 53 insertions, 29 deletions

diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 9639c66b453d..9df783088b61 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -72,32 +72,62 @@ static irqreturn_t ras_error_interrupt(int irq, void *dev_id,
 
 /* #define DEBUG */
 
-static void request_ras_irqs(struct device_node *np, char *propname,
+
+static void request_ras_irqs(struct device_node *np,
                         irqreturn_t (*handler)(int, void *, struct pt_regs *),
                         const char *name)
 {
-        unsigned int *ireg, len, i;
-        int virq, n_intr;
-
-        ireg = (unsigned int *)get_property(np, propname, &len);
-        if (ireg == NULL)
-                return;
-        n_intr = prom_n_intr_cells(np);
-        len /= n_intr * sizeof(*ireg);
-
-        for (i = 0; i < len; i++) {
-                virq = virt_irq_create_mapping(*ireg);
-                if (virq == NO_IRQ) {
-                        printk(KERN_ERR "Unable to allocate interrupt "
-                               "number for %s\n", np->full_name);
-                        return;
+        int i, index, count = 0;
+        struct of_irq oirq;
+        u32 *opicprop;
+        unsigned int opicplen;
+        unsigned int virqs[16];
+
+        /* Check for obsolete "open-pic-interrupt" property. If present, then
+         * map those interrupts using the default interrupt host and default
+         * trigger
+         */
+        opicprop = (u32 *)get_property(np, "open-pic-interrupt", &opicplen);
+        if (opicprop) {
+                opicplen /= sizeof(u32);
+                for (i = 0; i < opicplen; i++) {
+                        if (count > 15)
+                                break;
+                        virqs[count] = irq_create_mapping(NULL, *(opicprop++),
+                                                         IRQ_TYPE_NONE);
+                        if (virqs[count] == NO_IRQ)
+                                printk(KERN_ERR "Unable to allocate interrupt "
+                                       "number for %s\n", np->full_name);
+                        else
+                                count++;
+
                 }
-                if (request_irq(irq_offset_up(virq), handler, 0, name, NULL)) {
+        }
+        /* Else use normal interrupt tree parsing */
+        else {
+                /* First try to do a proper OF tree parsing */
+                for (index = 0; of_irq_map_one(np, index, &oirq) == 0;
+                     index++) {
+                        if (count > 15)
+                                break;
+                        virqs[count] = irq_create_of_mapping(oirq.controller,
+                                                            oirq.specifier,
+                                                            oirq.size);
+                        if (virqs[count] == NO_IRQ)
+                                printk(KERN_ERR "Unable to allocate interrupt "
+                                       "number for %s\n", np->full_name);
+                        else
+                                count++;
+                }
+        }
+
+        /* Now request them */
+        for (i = 0; i < count; i++) {
+                if (request_irq(virqs[i], handler, 0, name, NULL)) {
                         printk(KERN_ERR "Unable to request interrupt %d for "
-                               "%s\n", irq_offset_up(virq), np->full_name);
+                               "%s\n", virqs[i], np->full_name);
                         return;
                 }
-                ireg += n_intr;
         }
 }
 
@@ -115,20 +145,14 @@ static int __init init_ras_IRQ(void)
         /* Internal Errors */
         np = of_find_node_by_path("/event-sources/internal-errors");
         if (np != NULL) {
-                request_ras_irqs(np, "open-pic-interrupt", ras_error_interrupt,
-                                 "RAS_ERROR");
-                request_ras_irqs(np, "interrupts", ras_error_interrupt,
-                                 "RAS_ERROR");
+                request_ras_irqs(np, ras_error_interrupt, "RAS_ERROR");
                 of_node_put(np);
         }
 
         /* EPOW Events */
         np = of_find_node_by_path("/event-sources/epow-events");
         if (np != NULL) {
-                request_ras_irqs(np, "open-pic-interrupt", ras_epow_interrupt,
-                                 "RAS_EPOW");
-                request_ras_irqs(np, "interrupts", ras_epow_interrupt,
-                                 "RAS_EPOW");
+                request_ras_irqs(np, ras_epow_interrupt, "RAS_EPOW");
                 of_node_put(np);
         }
 
@@ -162,7 +186,7 @@ ras_epow_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 
         status = rtas_call(ras_check_exception_token, 6, 1, NULL,
                            RAS_VECTOR_OFFSET,
-                           virt_irq_to_real(irq_offset_down(irq)),
+                           irq_map[irq].hwirq,
                            RTAS_EPOW_WARNING | RTAS_POWERMGM_EVENTS,
                            critical, __pa(&ras_log_buf),
                                 rtas_get_error_log_max());
@@ -198,7 +222,7 @@ ras_error_interrupt(int irq, void *dev_id, struct pt_regs * regs)
 
         status = rtas_call(ras_check_exception_token, 6, 1, NULL,
                            RAS_VECTOR_OFFSET,
-                           virt_irq_to_real(irq_offset_down(irq)),
+                           irq_map[irq].hwirq,
                            RTAS_INTERNAL_ERROR, 1 /*Time Critical */,
                            __pa(&ras_log_buf),
                                 rtas_get_error_log_max());