diff options
Diffstat (limited to 'arch/powerpc/platforms/85xx')
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_cds.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c index e77c869d391..2a41083aca3 100644 --- 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 */ |