begin_undock() is only called when triggered via a acpi notify handler (pressing the undock button on the dock station), but complete_undock() is always called after the eject. So if a undock is triggered through a sysfs write, the flag DOCK_UNDOCKING has to be set for the dock station, too. Otherwise this will freeze the system hard. Signed-off-by: Holger Macht <hmacht@xxxxxxx> --- diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 307cef6..fa44fb9 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -710,6 +710,7 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr, if (!count) return -EINVAL; + begin_undock(dock_station); ret = handle_eject_request(dock_station, ACPI_NOTIFY_EJECT_REQUEST); return ret ? ret: count; } -- 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