From: 黄涛 <huangtao@rock-chips.com>
Date: Thu, 5 Dec 2013 02:45:21 +0000 (+0800)
Subject: ARM: rockchip: fiq-debugger: support status on DT
X-Git-Tag: firefly_0821_release~6457
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ffbd8425006bcc81983cad98585f4b50d306e81e;p=firefly-linux-kernel-4.4.55.git

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 99397cd5dca6..b8f37f221e95 100644
--- 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;	
 	}