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powercap: intel_rapl: Allow probing without CPUID match

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Currently, CPU model checks is used to
1. get proper rapl_defaults callbacks for RAPL MSR/MMIO Interface.
2. create a platform device node for the intel_rapl_msr driver to probe.

Both of these are only mandatory for the RAPL MSR/MMIO Interface.

Make the CPUID match optional.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Wang Wendy <wendy.wang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui 2023-04-19 10:44:06 +08:00 committed by Rafael J. Wysocki
parent 31cb1304ad
commit 1488ac990a
1 changed files with 14 additions and 21 deletions
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35
drivers/powercap/intel_rapl_common.c
View file

@ -1528,32 +1528,25 @@ static int __init rapl_init(void)
int ret; int ret;
id = x86_match_cpu(rapl_ids); id = x86_match_cpu(rapl_ids);
if (!id) { if (id) {
pr_err("driver does not support CPU family %d model %d\n", rapl_defaults = (struct rapl_defaults *)id->driver_data;
boot_cpu_data.x86, boot_cpu_data.x86_model);
return -ENODEV; rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0);
if (!rapl_msr_platdev)
return -ENOMEM;
ret = platform_device_add(rapl_msr_platdev);
if (ret) {
platform_device_put(rapl_msr_platdev);
return ret;
}
} }
rapl_defaults = (struct rapl_defaults *)id->driver_data;
ret = register_pm_notifier(&rapl_pm_notifier); ret = register_pm_notifier(&rapl_pm_notifier);
if (ret) if (ret && rapl_msr_platdev) {
return ret; platform_device_del(rapl_msr_platdev);
rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0);
if (!rapl_msr_platdev) {
ret = -ENOMEM;
goto end;
}
ret = platform_device_add(rapl_msr_platdev);
if (ret)
platform_device_put(rapl_msr_platdev); platform_device_put(rapl_msr_platdev);
}
end:
if (ret)
unregister_pm_notifier(&rapl_pm_notifier);
return ret; return ret;
} }