acer-wmi: check the existence of internal wireless device when set capability

That will be better to check the existence of internal wireless device
when we set wireless capability and generate killswitch for it. It can
avoid userland access wireless rfkill but the machine doesn't have internal
wireless device.

Tested on Acer Travelmate 8572

Cc: Carlos Corbacho <carlos@strangeworlds.co.uk>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Thomas Renninger <trenn@suse.de>
Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 017b1a7eac8e175380c85a7a55208ad2983e7d23..ca52639af2d1a9560a61c40cdd4c13fd121737ce 100644 (file)
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1094,7 +1094,9 @@ static acpi_status WMID_set_capabilities(void)
                return AE_ERROR;
        }
 
-       interface->capability |= ACER_CAP_WIRELESS;
+       pr_info("Function bitmap for Communication Device: 0x%x\n", devices);
+       if (devices & 0x07)
+               interface->capability |= ACER_CAP_WIRELESS;
        if (devices & 0x40)
                interface->capability |= ACER_CAP_THREEG;
        if (devices & 0x10)