On 2/18/2025 3:36 AM, Mario Limonciello wrote:
> From: Mario Limonciello <mario.limonciello@amd.com>
>
> 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>
> ---
> drivers/cpufreq/amd-pstate.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
> index 12fb63169a24c..87c605348a3dc 100644
> --- a/drivers/cpufreq/amd-pstate.c
> +++ b/drivers/cpufreq/amd-pstate.c
> @@ -1034,6 +1034,7 @@ static int amd_pstate_cpu_init(struct cpufreq_policy *policy)
> free_cpudata2:
> freq_qos_remove_request(&cpudata->req[0]);
> free_cpudata1:
> + pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
> kfree(cpudata);
> return ret;
> }
> @@ -1527,6 +1528,7 @@ static int amd_pstate_epp_cpu_init(struct cpufreq_policy *policy)
> return 0;
>
> free_cpudata1:
> + pr_warn("Failed to initialize CPU %d: %d\n", policy->cpu, ret);
> kfree(cpudata);
> return ret;
> }