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Commit 92530664 authored by Seth Forshee's avatar Seth Forshee Committed by Matthew Garrett
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acer-wmi: Only update rfkill status for associated hotkey events 



acer-wmi is indiscriminately using the device state from hotkey
events to update the various rfkill states. On the Aspire 1830 this
can result in a soft block on the wlan when the touchpad hotkey is
pressed, as it is reporting a non-zero device state that does not
reflect the wireless status. To fix this, only update rfkill states
when a wlan or bluetooth hotkey is pressed.

Signed-off-by: default avatarSeth Forshee <seth.forshee@canonical.com>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 4dd1b49c

drivers/platform/x86/acer-wmi.c

+26 −15
Original line number Diff line number Diff line
@@ -1445,6 +1445,8 @@ static void acer_wmi_notify(u32 value, void *context) 
	union acpi_object *obj;

	struct event_return_value return_value;

	acpi_status status;

	u16 device_state;

	const struct key_entry *key;



	status = wmi_get_event_data(value, &response);

	if (status != AE_OK) {
@@ -1472,23 +1474,32 @@ static void acer_wmi_notify(u32 value, void *context) 


	switch (return_value.function) {

	case WMID_HOTKEY_EVENT:

		if (return_value.device_state) {

			u16 device_state = return_value.device_state;

		device_state = return_value.device_state;

		pr_debug("device state: 0x%x\n", device_state);



		key = sparse_keymap_entry_from_scancode(acer_wmi_input_dev,

							return_value.key_num);

		if (!key) {

			pr_warn("Unknown key number - 0x%x\n",

				return_value.key_num);

		} else {

			switch (key->keycode) {

			case KEY_WLAN:

			case KEY_BLUETOOTH:

				if (has_cap(ACER_CAP_WIRELESS))

					rfkill_set_sw_state(wireless_rfkill,

						!(device_state & ACER_WMID3_GDS_WIRELESS));

			if (has_cap(ACER_CAP_BLUETOOTH))

				rfkill_set_sw_state(bluetooth_rfkill,

				!(device_state & ACER_WMID3_GDS_BLUETOOTH));

				if (has_cap(ACER_CAP_THREEG))

					rfkill_set_sw_state(threeg_rfkill,

						!(device_state & ACER_WMID3_GDS_THREEG));

				if (has_cap(ACER_CAP_BLUETOOTH))

					rfkill_set_sw_state(bluetooth_rfkill,

						!(device_state & ACER_WMID3_GDS_BLUETOOTH));

				break;

			}

			sparse_keymap_report_entry(acer_wmi_input_dev, key,

						   1, true);

		}

		if (!sparse_keymap_report_event(acer_wmi_input_dev,

				return_value.key_num, 1, true))

			pr_warn("Unknown key number - 0x%x\n",

				return_value.key_num);

		break;

	default:

		pr_warn("Unknown function number - %d - %d\n",