[ACPI] generic Hot Key support
See Documentation/acpi-hotkey.txt
Use cmdline "acpi_specific_hotkey" to enable
legacy platform specific drivers.
http://bugzilla.kernel.org/show_bug.cgi?id=3887
Signed-off-by: Luming Yu <luming.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 0fb731a..6c8291c 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -1185,6 +1185,10 @@
if (acpi_disabled)
return -ENODEV;
+ if (!acpi_specific_hotkey_enabled){
+ printk(IBM_ERR "Using generic hotkey driver\n");
+ return -ENODEV;
+ }
/* these handles are required */
if (IBM_HANDLE_INIT(ec, 1) < 0 ||
IBM_HANDLE_INIT(hkey, 1) < 0 ||