[POWERPC] 85xxCDS: Delay 8259 cascade hookup.

[linux-2.6] / arch / powerpc / platforms / 85xx / mpc85xx_cds.c

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index e77c869d391621f727a3fb53d61d5eea9cd02095..2a41083aca3cd1a981e847391a1da2269a0937ed 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -183,10 +183,6 @@ static void __init mpc85xx_cds_pic_init(void)
        struct mpic *mpic;
        struct resource r;
        struct device_node *np = NULL;
-#if defined(CONFIG_PPC_I8259) && defined(CONFIG_PCI)
-       struct device_node *cascade_node = NULL;
-       int cascade_irq;
-#endif
 
        np = of_find_node_by_type(np, "open-pic");
 
@@ -210,8 +206,19 @@ static void __init mpc85xx_cds_pic_init(void)
        of_node_put(np);
 
        mpic_init(mpic);
+}
 
 #if defined(CONFIG_PPC_I8259) && defined(CONFIG_PCI)
+static int mpc85xx_cds_8259_attach(void)
+{
+       int ret;
+       struct device_node *np = NULL;
+       struct device_node *cascade_node = NULL;
+       int cascade_irq;
+
+       if (!machine_is(mpc85xx_cds))
+               return 0;
+
        /* Initialize the i8259 controller */
        for_each_node_by_type(np, "interrupt-controller")
                if (of_device_is_compatible(np, "chrp,iic")) {
@@ -221,13 +228,13 @@ static void __init mpc85xx_cds_pic_init(void)
 
        if (cascade_node == NULL) {
                printk(KERN_DEBUG "Could not find i8259 PIC\n");
-               return;
+               return -ENODEV;
        }
 
        cascade_irq = irq_of_parse_and_map(cascade_node, 0);
        if (cascade_irq == NO_IRQ) {
                printk(KERN_ERR "Failed to map cascade interrupt\n");
-               return;
+               return -ENXIO;
        }
 
        i8259_init(cascade_node, 0);
@@ -239,14 +246,21 @@ static void __init mpc85xx_cds_pic_init(void)
         *  disabled when the last user of the shared IRQ line frees their
         *  interrupt.
         */
-       if (setup_irq(cascade_irq, &mpc85xxcds_8259_irqaction))
+       if ((ret = setup_irq(cascade_irq, &mpc85xxcds_8259_irqaction))) {
                printk(KERN_ERR "Failed to setup cascade interrupt\n");
-       else
-               /* Success. Connect our low-level cascade handler. */
-               set_irq_handler(cascade_irq, mpc85xx_8259_cascade_handler);
-#endif /* CONFIG_PPC_I8259 */
+               return ret;
+       }
+
+       /* Success. Connect our low-level cascade handler. */
+       set_irq_handler(cascade_irq, mpc85xx_8259_cascade_handler);
+
+       return 0;
 }
 
+device_initcall(mpc85xx_cds_8259_attach);
+
+#endif /* CONFIG_PPC_I8259 */
+
 /*
  * Setup the architecture
  */