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cpufreq/amd-pstate: Show a warning when a CPU fails to setup

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I came across a system that MSR_AMD_CPPC_CAP1 for some CPUs isn't
populated.  This is an unexpected behavior that is most likely a
BIOS bug. In the event it happens I'd like users to report bugs
to properly root cause and get this fixed.

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello 2024-12-11 14:57:57 -06:00
parent b7a4115658
commit a9ba0fd452
1 changed files with 2 additions and 0 deletions
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2
drivers/cpufreq/amd-pstate.c
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@ -1028,6 +1028,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
free_cpudata2: free_cpudata2:
freq_qos_remove_request(&cpudata->req[0]); freq_qos_remove_request(&cpudata->req[0]);
free_cpudata1: free_cpudata1:
pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
kfree(cpudata); kfree(cpudata);
return ret; return ret;
} }
@ -1521,6 +1522,7 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
return 0; return 0;
free_cpudata1: free_cpudata1:
pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
kfree(cpudata); kfree(cpudata);
return ret; return ret;
} }