commit 8b59560a3baf2e7c24e0fb92ea5d09eca92805db
Author: Shaohua Li <shaohua.li@xxxxxxxxx>
Date: Thu Aug 28 10:02:03 2008 +0800
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: Shaohua Li <shaohua.li@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7d2edf1..25d2161 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -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,
--
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