Send a switch event on docking for consistency with docks that don't 
present as a separate device.

Signed-off-by: Matthew Garrett <redacted>

---

diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index fa44fb9..a67e74c 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c

@@ -25,6 +25,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/types.h>
 #include <linux/notifier.h>
 #include <linux/platform_device.h>

@@ -65,6 +66,7 @@ struct dock_station {
 	struct mutex hp_lock;
 	struct list_head dependent_devices;
 	struct list_head hotplug_devices;
+	struct input_dev *dock_input;
 };
 
 struct dock_dependent_device {

@@ -345,10 +347,13 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
 	char event_string[13];
 	char *envp[] = { event_string, NULL };
 
-	if (num == UNDOCK_EVENT)
+	if (num == UNDOCK_EVENT) {
+		input_report_switch(dock_station->dock_input, SW_DOCK, 0);