Pull video into test branch

[linux-drm-fsl-dcu.git] / arch / powerpc / kernel / prom_parse.c

diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index 0dfbe1cd28eb2644cd59927eae4938fa8fdf088a..12c51e4ad2b4b97b4468e8fca178fa435d86a025 100644 (file)
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -920,9 +920,20 @@ static int of_irq_map_oldworld(struct device_node *device, int index,
 
        /*
         * Old machines just have a list of interrupt numbers
-        * and no interrupt-controller nodes.
+        * and no interrupt-controller nodes. We also have dodgy
+        * cases where the APPL,interrupts property is completely
+        * missing behind pci-pci bridges and we have to get it
+        * from the parent (the bridge itself, as apple just wired
+        * everything together on these)
         */
-       ints = get_property(device, "AAPL,interrupts", &intlen);
+       while (device) {
+               ints = get_property(device, "AAPL,interrupts", &intlen);
+               if (ints != NULL)
+                       break;
+               device = device->parent;
+               if (device && strcmp(device->type, "pci") != 0)
+                       break;
+       }
        if (ints == NULL)
                return -EINVAL;
        intlen /= sizeof(u32);