6.17-stable review patch. If anyone has any objections, please let me know.
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From: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com
[ Upstream commit 6d47b4f08436cb682fb2644e6265a3897fd42a77 ]
A partitioned system configured with only one package and one compute die, warning will be generated for duplicate sysfs entry. This typically occurs during the platform bring-up phase.
Partitioned systems expose dies, equivalent to TPMI compute domains, through the CPUID. Each partitioned system must contains at least one compute die per partition, resulting in a minimum of two dies per package. Hence the function topology_max_dies_per_package() returns at least two, and the condition "topology_max_dies_per_package() > 1" prevents the creation of a root domain.
In this case topology_max_dies_per_package() will return 1 and root domain will be created for partition 0 and a duplicate sysfs warning for partition 1 as both partitions have same package ID.
To address this also check for non zero partition in addition to topology_max_dies_per_package() > 1.
Signed-off-by: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com Link: https://lore.kernel.org/r/20250819211034.3776284-1-srinivas.pandruvada@linux... Signed-off-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c index bfcf92aa4d69d..3e531fd1c6297 100644 --- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c +++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c @@ -638,7 +638,7 @@ static int uncore_probe(struct auxiliary_device *auxdev, const struct auxiliary_
auxiliary_set_drvdata(auxdev, tpmi_uncore);
- if (topology_max_dies_per_package() > 1) + if (topology_max_dies_per_package() > 1 || plat_info->partition) return 0;
tpmi_uncore->root_cluster.root_domain = true;