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cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value
[ Upstream commitf661017e6d
] cpufreq_cpu_get may return NULL. To avoid NULL-dereference check it and return 0 in case of error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes:de322e0859
("cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for Broadcom STB SoCs") Signed-off-by: Anastasia Belova <abelova@astralinux.ru> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -481,6 +481,8 @@ static bool brcm_avs_is_firmware_loaded(struct private_data *priv)
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static unsigned int brcm_avs_cpufreq_get(unsigned int cpu)
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{
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struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
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if (!policy)
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return 0;
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struct private_data *priv = policy->driver_data;
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cpufreq_cpu_put(policy);
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