acer-wmi: Disable device autodetection on Fujitsu Siemens Amilo Li2732
authorCarlos Corbacho <carlos@strangeworlds.co.uk>
Sat, 21 Jun 2008 08:09:48 +0000 (09:09 +0100)
committerAndi Kleen <andi@basil.nowhere.org>
Wed, 16 Jul 2008 21:27:02 +0000 (23:27 +0200)
The AMW0 (V1) device detection method doesn't work properly on this laptop,
so disable it, and for other laptops that may have this problem, by
switching on a strange GUID.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
drivers/misc/acer-wmi.c

index 5b7c5fcd5af73e7230f6160121a9548693d22e7c..dd0b8d8b5bd96fa51e5035b83f0f75b8a3e793ed 100644 (file)
@@ -88,6 +88,7 @@ struct acer_quirks {
  * Acer ACPI method GUIDs
  */
 #define AMW0_GUID1             "67C3371D-95A3-4C37-BB61-DD47B491DAAB"
+#define AMW0_GUID2             "431F16ED-0C2B-444C-B267-27DEB140CF9C"
 #define WMID_GUID1             "6AF4F258-B401-42fd-BE91-3D4AC2D7C0D3"
 #define WMID_GUID2             "95764E09-FB56-4e83-B31A-37761F60994A"
 
@@ -548,6 +549,15 @@ static acpi_status AMW0_set_capabilities(void)
        struct acpi_buffer out = { ACPI_ALLOCATE_BUFFER, NULL };
        union acpi_object *obj;
 
+       /*
+        * On laptops with this strange GUID (non Acer), normal probing doesn't
+        * work.
+        */
+       if (wmi_has_guid(AMW0_GUID2)) {
+               interface->capability |= ACER_CAP_WIRELESS;
+               return AE_OK;
+       }
+
        args.eax = ACER_AMW0_WRITE;
        args.ecx = args.edx = 0;