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Merge tag 'cpufreq-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull cpufreq fix from Rafael Wysocki:
 "This fixes a regression preventing the ACPI cpufreq driver from
  loading on some systems where it worked previously without any
  problems."

* tag 'cpufreq-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression
Linus Torvalds 13 years ago
parent
commit
a7559b13de
1 changed files with 4 additions and 2 deletions
  1. 4 2
      drivers/acpi/processor_core.c

+ 4 - 2
drivers/acpi/processor_core.c

@@ -189,10 +189,12 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id)
 		 *     Processor (CPU3, 0x03, 0x00000410, 0x06) {}
 		 * }
 		 *
-		 * Ignores apic_id and always return 0 for CPU0's handle.
+		 * Ignores apic_id and always returns 0 for the processor
+		 * handle with acpi id 0 if nr_cpu_ids is 1.
+		 * This should be the case if SMP tables are not found.
 		 * Return -1 for other CPU's handle.
 		 */
-		if (acpi_id == 0)
+		if (nr_cpu_ids <= 1 && acpi_id == 0)
 			return acpi_id;
 		else
 			return apic_id;