Exit ACPI processor module gracefully if acpi is disabled Description: processor module might oops when machine is booted without acpi support and the module gets rmmodded. Module must still be loadable to provide cpufreq functionality even without acpi. Reference - http://bugzilla.novell.com/show_bug.cgi?id=165803 Signed-off-by: Thomas Renninger <mail@xxxxxxxxxxxx> drivers/acpi/processor_core.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5 deletions(-) Index: linux-2.6.18-rc2/drivers/acpi/processor_core.c =================================================================== --- linux-2.6.18-rc2.orig/drivers/acpi/processor_core.c +++ linux-2.6.18-rc2/drivers/acpi/processor_core.c @@ -891,6 +891,8 @@ 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; @@ -909,6 +911,7 @@ static int __init acpi_processor_init(vo remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); return 0; } + processor_driver_registered = 1; acpi_processor_install_hotplug_notify(); @@ -926,11 +929,11 @@ static void __exit acpi_processor_exit(v acpi_thermal_cpufreq_exit(); - acpi_processor_uninstall_hotplug_notify(); - - acpi_bus_unregister_driver(&acpi_processor_driver); - - remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); + 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; }
Exit ACPI processor module gracefully if acpi is disabled Description: processor module might oops when machine is booted without acpi support and the module gets rmmodded. Module must still be loadable to provide cpufreq functionality even without acpi. Reference - http://bugzilla.novell.com/show_bug.cgi?id=165803 Signed-off-by: Thomas Renninger <mail@xxxxxxxxxxxx> drivers/acpi/processor_core.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5 deletions(-) Index: linux-2.6.18-rc2/drivers/acpi/processor_core.c =================================================================== --- linux-2.6.18-rc2.orig/drivers/acpi/processor_core.c +++ linux-2.6.18-rc2/drivers/acpi/processor_core.c @@ -891,6 +891,8 @@ 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; @@ -909,6 +911,7 @@ static int __init acpi_processor_init(vo remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); return 0; } + processor_driver_registered = 1; acpi_processor_install_hotplug_notify(); @@ -926,11 +929,11 @@ static void __exit acpi_processor_exit(v acpi_thermal_cpufreq_exit(); - acpi_processor_uninstall_hotplug_notify(); - - acpi_bus_unregister_driver(&acpi_processor_driver); - - remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); + 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; }
