4.19-stable review patch. If anyone has any objections, please let me know.
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From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit fadf231f0a06a6748a7fc4a2c29ac9ef7bca6bfd ]
Rafael observed [1] that returning 0 from processor_add() will result in acpi_default_enumeration() being called which will attempt to create a platform device, but that makes little sense when the processor is known to be not available. So just return the error code from acpi_processor_get_info() instead.
Link: https://lore.kernel.org/all/CAJZ5v0iKU8ra9jR+EmgxbuNm=Uwx2m1-8vn_RAZ+aCiUVLe... [1] Suggested-by: Rafael J. Wysocki rafael@kernel.org Acked-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Reviewed-by: Gavin Shan gshan@redhat.com Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Link: https://lore.kernel.org/r/20240529133446.28446-5-Jonathan.Cameron@huawei.com Signed-off-by: Catalin Marinas catalin.marinas@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/acpi_processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index a448cdf56718..9726516abdd5 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -391,7 +391,7 @@ static int acpi_processor_add(struct acpi_device *device,
result = acpi_processor_get_info(device); if (result) /* Processor is not physically present or unavailable */ - return 0; + return result;
BUG_ON(pr->id >= nr_cpu_ids);