ARM: rockchip: fiq-debugger: support status on DT

diff --git a/arch/arm/mach-rockchip/rk_fiq_debugger.c b/arch/arm/mach-rockchip/rk_fiq_debugger.c
index 99397cd5dca62c56df8794116e654118b69703ac..b8f37f221e95ece4f0b9667a6bcf39339cf299e7 100644 (file)
--- a/arch/arm/mach-rockchip/rk_fiq_debugger.c
+++ b/arch/arm/mach-rockchip/rk_fiq_debugger.c
@@ -306,7 +306,12 @@ static int __init rk_fiq_debugger_init(void) {
                printk("fiq-debugger is missing in device tree!\n");
                return -ENODEV;
        }
-               
+
+       if (!of_device_is_available(np)) {
+               printk("fiq-debugger is disabled in device tree\n");
+               return -ENODEV;
+       }
+
        if (of_property_read_u32(np, "serial-id", &serial_id)) {
                return -EINVAL; 
        }