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Fix an issue with changing amd-pstate modes at runtime on shared memory systems

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Merge tag 'amd-pstate-v6.12-2024-10-10' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux

Merge an amd-pstate fix for 6.12 from Mario Limonciello:

"Fix an issue with changing amd-pstate modes at runtime on shared memory
 systems."

* tag 'amd-pstate-v6.12-2024-10-10' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux:
  cpufreq/amd-pstate: Fix amd_pstate mode switch on shared memory systems
This commit is contained in:
Rafael J. Wysocki 2024-10-11 20:32:58 +02:00
commit 940efc9fc8
1 changed files with 10 additions and 0 deletions
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10
drivers/cpufreq/amd-pstate.c
View File

@ -1201,11 +1201,21 @@ static int amd_pstate_register_driver(int mode)
return -EINVAL;
cppc_state = mode;
ret = amd_pstate_enable(true);
if (ret) {
pr_err("failed to enable cppc during amd-pstate driver registration, return %d\n",
ret);
amd_pstate_driver_cleanup();
return ret;
}
ret = cpufreq_register_driver(current_pstate_driver);
if (ret) {
amd_pstate_driver_cleanup();
return ret;
}
return 0;
}