From: chenxing <chenxing@rock-chips.com>
Date: Wed, 19 Jun 2013 03:14:52 +0000 (+0800)
Subject: rk3188: dvfs: dvfs_adjust_table_lmtvolt determine whether variables are legitimate
X-Git-Tag: firefly_0821_release~6965^2~57
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6cf2ac33fbdf0538621d3c5805a4ff47d18c8aea;p=firefly-linux-kernel-4.4.55.git

rk3188: dvfs: dvfs_adjust_table_lmtvolt determine whether variables are legitimate
---

diff --git a/arch/arm/mach-rk3188/dvfs.c b/arch/arm/mach-rk3188/dvfs.c
index 0aab82f67808..38ea09e8cc05 100755
--- a/arch/arm/mach-rk3188/dvfs.c
+++ b/arch/arm/mach-rk3188/dvfs.c
@@ -99,6 +99,10 @@ void dvfs_adjust_table_lmtvolt(struct clk *clk, struct cpufreq_frequency_table *
 {
 	int i = 0;
 	unsigned int maxvolt = 0;
+	if (IS_ERR(clk) || IS_ERR_OR_NULL(table)) {
+		DVFS_ERR("%s: clk error OR table error\n", __func__);
+		return ;
+	}
 
 	leakage_level = rk_leakage_val();
 	printk("DVFS MSG: %s: %s get leakage_level = %d\n", clk->name, __func__, leakage_level);