From: Zhang Rui <rui.zhang@xxxxxxxxx> Sys I/F under acpi device node and sysdev device node are both needed for cpu hot-removal. User space need this link so that they know they are poking the sys I/F for the same cpu. http://bugzilla.kernel.org/show_bug.cgi?id=9772 Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/processor_core.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 3f90965..e8f82d6 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -622,7 +622,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) int result = 0; acpi_status status = AE_OK; struct acpi_processor *pr; - + struct sys_device *sysdev; pr = acpi_driver_data(device); @@ -653,6 +653,10 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) if (result) goto end; + sysdev = get_cpu_sysdev(pr->id); + if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev")) + return -EFAULT; + status = acpi_install_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify, pr); @@ -812,6 +816,8 @@ static int acpi_processor_remove(struct acpi_device *device, int type) status = acpi_remove_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify); + sysfs_remove_link(&device->dev.kobj, "sysdev"); + acpi_processor_remove_fs(device); if (pr->cdev) { -- 1.5.6 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
