6.12-stable review patch. If anyone has any objections, please let me know.
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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 9db5354fdb027..7a16d19322286 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -696,7 +696,6 @@ 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); WRITE_ONCE(cpudata->boost_state, !ret ? state : false);