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platform/x86/intel/pmc/ssram: Make PMT registration optional

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The SSRAM telemetry driver extracts essential PMC device ID and power
management base address information that intel_pmc_core depends on for core
functionality. If PMT registration failure prevents this critical data from
being available, intel_pmc_core operation would break entirely. Therefore,
PMT registration failures must not block access to this data.

Change the behavior to log a warning when PMT registration fails but
continue with successful driver initialization, ensuring the primary
telemetry data remains accessible to dependent drivers.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://patch.msgid.link/4f4c324977951f6082bf2218c8b911e1ae7e0a7b.1781294741.git.david.e.box@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
David E. Box 2026-06-12 14:01:55 -07:00 committed by Ilpo Järvinen
parent 08b94937c7
commit 8a3607ece5
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/x86/intel/pmc/ssram_telemetry.c
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@ -198,7 +198,7 @@ pmc_ssram_telemetry_get_pmc_pci(struct pci_dev *pcidev,
/* Find and register and PMC telemetry entries */
ret = pmc_ssram_telemetry_add_pmt(pcidev, ssram_base, ssram);
if (ret)
return ret;
dev_warn(&pcidev->dev, "could not register PMT\n");
probe_cache->valid_mask |= BIT(pmc_idx);
@ -291,7 +291,7 @@ static int pmc_ssram_telemetry_acpi_init(struct pci_dev *pcidev,
ret = intel_vsec_register(&pcidev->dev, &info);
if (ret)
return ret;
dev_warn(&pcidev->dev, "could not register PMT\n");
return pmc_ssram_telemetry_get_pmc_acpi(pcidev, probe_cache, index);
}