From 91fafd22f8520b4be6941d6066f58dd561ffa724 Mon Sep 17 00:00:00 2001 From: Xuewen Yan Date: Thu, 25 Aug 2022 19:40:17 +0800 Subject: [PATCH] thermal: cpufreq_cooling: Check the policy first in cpufreq_cooling_register() [ Upstream commit cff895277c8558221ba180aefe26799dcb4eec86 ] Since the policy needs to be accessed first when obtaining cpu devices, first check whether the policy is legal before this. Fixes: 5130802ddbb1 ("thermal: cpu_cooling: Switch to QoS requests for freq limits") Signed-off-by: Xuewen Yan Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/thermal/cpufreq_cooling.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/thermal/cpufreq_cooling.c b/drivers/thermal/cpufreq_cooling.c index 43b1ae8..12a6041 100644 --- a/drivers/thermal/cpufreq_cooling.c +++ b/drivers/thermal/cpufreq_cooling.c @@ -525,17 +525,17 @@ __cpufreq_cooling_register(struct device_node *np, struct thermal_cooling_device_ops *cooling_ops; char *name; + if (IS_ERR_OR_NULL(policy)) { + pr_err("%s: cpufreq policy isn't valid: %p\n", __func__, policy); + return ERR_PTR(-EINVAL); + } + dev = get_cpu_device(policy->cpu); if (unlikely(!dev)) { pr_warn("No cpu device for cpu %d\n", policy->cpu); return ERR_PTR(-ENODEV); } - if (IS_ERR_OR_NULL(policy)) { - pr_err("%s: cpufreq policy isn't valid: %p\n", __func__, policy); - return ERR_PTR(-EINVAL); - } - i = cpufreq_table_count_valid_entries(policy); if (!i) { pr_debug("%s: CPUFreq table not found or has no valid entries\n", -- 2.7.4