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| author | Zhang Rui <rui.zhang@intel.com> | 2023-04-19 10:44:06 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-05-24 18:46:19 +0200 |
| commit | 1488ac990ac886b1209aa9f94c0c66022bcc8827 (patch) | |
| tree | d2309a7ad7f2d4a8d3ec3dec5778031f1e1f79f1 /drivers/powercap | |
| parent | 31cb1304ad8bd27b7d2abd8669fb887fb47d8eaf (diff) | |
| download | linux-1488ac990ac886b1209aa9f94c0c66022bcc8827.tar.gz linux-1488ac990ac886b1209aa9f94c0c66022bcc8827.tar.bz2 linux-1488ac990ac886b1209aa9f94c0c66022bcc8827.zip | |
powercap: intel_rapl: Allow probing without CPUID match
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>
Diffstat (limited to 'drivers/powercap')
| -rw-r--r-- | drivers/powercap/intel_rapl_common.c | 35 |
1 files changed, 14 insertions, 21 deletions
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c index 8970c7b80884..2d2c15eea8eb 100644 --- a/drivers/powercap/intel_rapl_common.c +++ b/drivers/powercap/intel_rapl_common.c @@ -1528,32 +1528,25 @@ static int __init rapl_init(void) int ret; id = x86_match_cpu(rapl_ids); - if (!id) { - pr_err("driver does not support CPU family %d model %d\n", - boot_cpu_data.x86, boot_cpu_data.x86_model); + if (id) { + rapl_defaults = (struct rapl_defaults *)id->driver_data; - return -ENODEV; - } - - rapl_defaults = (struct rapl_defaults *)id->driver_data; - - ret = register_pm_notifier(&rapl_pm_notifier); - if (ret) - return ret; + rapl_msr_platdev = platform_device_alloc("intel_rapl_msr", 0); + if (!rapl_msr_platdev) + return -ENOMEM; - 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); + return ret; + } } - ret = platform_device_add(rapl_msr_platdev); - if (ret) + ret = register_pm_notifier(&rapl_pm_notifier); + if (ret && rapl_msr_platdev) { + platform_device_del(rapl_msr_platdev); platform_device_put(rapl_msr_platdev); - -end: - if (ret) - unregister_pm_notifier(&rapl_pm_notifier); + } return ret; } |