From: Dhananjay Ugwekar dhananjay.ugwekar@amd.com
[ Upstream commit db1cafc77aaaf871509da06f4a864e9af6d6791f ]
set_boost is a per-policy function call, hence a driver wide lock is unnecessary. Also this mutex_acquire can collide with the mutex_acquire from the mode-switch path in status_store(), which can lead to a deadlock. So, remove it.
Signed-off-by: Dhananjay Ugwekar dhananjay.ugwekar@amd.com Acked-by: Mario Limonciello mario.limonciello@amd.com Signed-off-by: Viresh Kumar viresh.kumar@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/cpufreq/amd-pstate.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 1b26845703f68..a27749d948b46 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -746,7 +746,6 @@ static int amd_pstate_set_boost(struct cpufreq_policy *policy, int state) pr_err("Boost mode is not supported by this processor or SBIOS\n"); return -EOPNOTSUPP; } - guard(mutex)(&amd_pstate_driver_lock);
ret = amd_pstate_cpu_boost_update(policy, state); refresh_frequency_limits(policy);