From d02dc548d4ef64a34e1b96b96057234f66fb886f Mon Sep 17 00:00:00 2001 From: "Huang, Tao" Date: Wed, 29 Apr 2015 09:05:09 +0800 Subject: [PATCH] cpufreq: rockchip_big_little: check cpufreq_cpu_get return value fix panic when cpu up/down Signed-off-by: Huang, Tao --- drivers/cpufreq/rockchip_big_little.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/cpufreq/rockchip_big_little.c b/drivers/cpufreq/rockchip_big_little.c index c817d5b11d95..b333837664f9 100644 --- a/drivers/cpufreq/rockchip_big_little.c +++ b/drivers/cpufreq/rockchip_big_little.c @@ -196,6 +196,8 @@ static int rockchip_bl_cpufreq_scale_rate_for_dvfs(struct clk *clk, cur_cluster = clk_node_get_cluster_id(clk); policy = cpufreq_cpu_get(cluster_policy_cpu[cur_cluster]); + if (!policy) + return 0; freqs.new = rate / 1000; freqs.old = clk_get_rate(clk) / 1000; -- 2.34.1