Re: Exit ACPI drivers immediately if acpi is disabled

[Thomas Renninger <trenn@suse.de>]

Rethinking about this: driver_registered is a bit too general variable?

Is this OK, now?

Subject: Exit ACPI processor module gracefully if acpi is disabled

Signed-off-by: Thomas Renninger <trenn@suse.de>

 drivers/acpi/processor_core.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletion(-)

Index: linux-2.6.16/drivers/acpi/processor_core.c
===================================================================
--- linux-2.6.16.orig/drivers/acpi/processor_core.c
+++ linux-2.6.16/drivers/acpi/processor_core.c
@@ -906,6 +906,8 @@ void acpi_processor_uninstall_hotplug_no
  * ACPI, but needs symbols from this driver
  */
 
+static int processor_driver_registered = 0;
+
 static int __init acpi_processor_init(void)
 {
 	int result = 0;
@@ -926,6 +928,8 @@ static int __init acpi_processor_init(vo
 		return_VALUE(0);
 	}
 
+	processor_driver_registered = 1;
+
 	acpi_processor_install_hotplug_notify();
 
 	acpi_thermal_cpufreq_init();
@@ -943,12 +947,13 @@ static void __exit acpi_processor_exit(v
 
 	acpi_thermal_cpufreq_exit();
 
+	if (processor_driver_registered){
 	acpi_processor_uninstall_hotplug_notify();
 
 	acpi_bus_unregister_driver(&acpi_processor_driver);
 
 	remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
-
+	}
 	return_VOID;
 }