From: David E. Box Date: Fri, 12 Jun 2026 21:01:55 +0000 (-0700) Subject: platform/x86/intel/pmc/ssram: Make PMT registration optional X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=8a3607ece59fcf84cf4129bdf683cb09122e6b51;p=thirdparty%2Fkernel%2Flinux.git platform/x86/intel/pmc/ssram: Make PMT registration optional 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 Link: https://patch.msgid.link/4f4c324977951f6082bf2218c8b911e1ae7e0a7b.1781294741.git.david.e.box@linux.intel.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen --- diff --git a/drivers/platform/x86/intel/pmc/ssram_telemetry.c b/drivers/platform/x86/intel/pmc/ssram_telemetry.c index 10462fa7ebbfe..9a8922045ab74 100644 --- a/drivers/platform/x86/intel/pmc/ssram_telemetry.c +++ b/drivers/platform/x86/intel/pmc/ssram_telemetry.c @@ -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); }