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Commit 8b59560a authored by Shaohua Li's avatar Shaohua Li Committed by Len Brown
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ACPI: dock: avoid check _STA method 

In some BIOSes, every _STA method call will send a notification again,
this cause freeze. And in some BIOSes, it appears _STA should be called
after _DCK. This tries to avoid calls _STA, and still keep the device
present check.

http://bugzilla.kernel.org/show_bug.cgi?id=10431



Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 72d31053

drivers/acpi/dock.c

+4 −1
Original line number Diff line number Diff line
@@ -604,14 +604,17 @@ static int handle_eject_request(struct dock_station *ds, u32 event) 
static void dock_notify(acpi_handle handle, u32 event, void *data)

{

	struct dock_station *ds = data;

	struct acpi_device *tmp;



	switch (event) {

	case ACPI_NOTIFY_BUS_CHECK:

		if (!dock_in_progress(ds) && dock_present(ds)) {

		if (!dock_in_progress(ds) && acpi_bus_get_device(ds->handle,

		   &tmp)) {

			begin_dock(ds);

			dock(ds);

			if (!dock_present(ds)) {

				printk(KERN_ERR PREFIX "Unable to dock!\n");

				complete_dock(ds);

				break;

			}

			atomic_notifier_call_chain(&dock_notifier_list,