cppc_acpi: print error message if CPPC is unsupported
The amd-pstate driver can fail when _CPC objects are not supported by the CPU. However, the current error message is ambiguous (see below) and there is no clear way for attributing the failure of the amd-pstate driver to the lack of CPPC support. [ 0.477523] amd_pstate: the _CPC object is not present in SBIOS or ACPI disabled Fix this by adding an debug message to notify the user if the amd-pstate driver failed to load due to CPPC not be supported by the CPU Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Tested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com> Signed-off-by: Perry Yuan <perry.yuan@amd.com> Acked-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
069a2bb8c4
commit
5f8f9bc4d7
@ -686,8 +686,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
|
||||
|
||||
if (!osc_sb_cppc2_support_acked) {
|
||||
pr_debug("CPPC v2 _OSC not acked\n");
|
||||
if (!cpc_supported_by_cpu())
|
||||
if (!cpc_supported_by_cpu()) {
|
||||
pr_debug("CPPC is not supported by the CPU\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
/* Parse the ACPI _CPC table for this CPU. */
|
||||
|
Loading…
x
Reference in New Issue
Block a user