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-rw-r--r--drivers/acpi/processor_core.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index c850de4c9a14..eff722278ff5 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -189,10 +189,12 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id)
189 * Processor (CPU3, 0x03, 0x00000410, 0x06) {} 189 * Processor (CPU3, 0x03, 0x00000410, 0x06) {}
190 * } 190 * }
191 * 191 *
192 * Ignores apic_id and always return 0 for CPU0's handle. 192 * Ignores apic_id and always returns 0 for the processor
193 * handle with acpi id 0 if nr_cpu_ids is 1.
194 * This should be the case if SMP tables are not found.
193 * Return -1 for other CPU's handle. 195 * Return -1 for other CPU's handle.
194 */ 196 */
195 if (acpi_id == 0) 197 if (nr_cpu_ids <= 1 && acpi_id == 0)
196 return acpi_id; 198 return acpi_id;
197 else 199 else
198 return apic_id; 200 return apic_id;