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| author | Jinjie Ruan <ruanjinjie@huawei.com> | 2024-11-06 09:01:11 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:02:12 +0100 |
| commit | fc514b27c0890e81f751a119b188f0f6f402a0a1 (patch) | |
| tree | bf3d21159aba92274f1325d1c7153d3deac98454 /lib | |
| parent | 32005acffc63dce0449031366c58ba2e9e79c13c (diff) | |
| download | linux-fc514b27c0890e81f751a119b188f0f6f402a0a1.tar.gz linux-fc514b27c0890e81f751a119b188f0f6f402a0a1.tar.bz2 linux-fc514b27c0890e81f751a119b188f0f6f402a0a1.zip | |
cpufreq: CPPC: Fix wrong return value in cppc_get_cpu_power()
[ Upstream commit b51eb0874d8170028434fbd259e80b78ed9b8eca ]
cppc_get_cpu_power() return 0 if the policy is NULL. Then in
em_create_perf_table(), the later zero check for power is not valid
as power is uninitialized. As Quentin pointed out, kernel energy model
core check the return value of active_power() first, so if the callback
failed it should tell the core. So return -EINVAL to fix it.
Fixes: a78e72075642 ("cpufreq: CPPC: Fix possible null-ptr-deref for cpufreq_cpu_get_raw()")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Suggested-by: Quentin Perret <qperret@google.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions