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| author | Anastasia Belova <abelova@astralinux.ru> | 2024-01-17 10:12:20 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-27 01:20:31 +0300 |
| commit | e72160cb6e23b78b41999d6885a34ce8db536095 (patch) | |
| tree | 761c9db304708df6fcc86fb0455d8e6342b1bf3f /drivers/cpufreq | |
| parent | a81edfc5ec8b0b07e790265e4a9aee2135a2c0bf (diff) | |
| download | linux-e72160cb6e23b78b41999d6885a34ce8db536095.tar.xz | |
cpufreq: brcmstb-avs-cpufreq: add check for cpufreq_cpu_get's return value
[ Upstream commit f661017e6d326ee187db24194cabb013d81bc2a6 ]
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: de322e085995 ("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>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/brcmstb-avs-cpufreq.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c index f644c5e325fb..38ec0fedb247 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -481,6 +481,8 @@ static bool brcm_avs_is_firmware_loaded(struct private_data *priv) static unsigned int brcm_avs_cpufreq_get(unsigned int cpu) { struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); + if (!policy) + return 0; struct private_data *priv = policy->driver_data; cpufreq_cpu_put(policy); |