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Commit 5682b1a8 authored by David Herrmann's avatar David Herrmann Committed by Jiri Kosina
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HID: wiimote: keep HID device open 



We need constant I/O to keep the state up-to-date and not miss any
packets. Hence, call hid_hw_open() during setup and hid_hw_close() during
destruction.

These are no-ops for Bluetooth HIDP, but lets be safe.

Signed-off-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 13938538

drivers/hid/hid-wiimote-core.c

+11 −37
Original line number Diff line number Diff line
@@ -626,30 +626,11 @@ static int wiimote_ff_play(struct input_dev *dev, void *data, 
	return 0;

}



static int wiimote_input_open(struct input_dev *dev)

{

	struct wiimote_data *wdata = input_get_drvdata(dev);



	return hid_hw_open(wdata->hdev);

}



static void wiimote_input_close(struct input_dev *dev)

{

	struct wiimote_data *wdata = input_get_drvdata(dev);



	hid_hw_close(wdata->hdev);

}



static int wiimote_accel_open(struct input_dev *dev)

{

	struct wiimote_data *wdata = input_get_drvdata(dev);

	int ret;

	unsigned long flags;



	ret = hid_hw_open(wdata->hdev);

	if (ret)

		return ret;



	spin_lock_irqsave(&wdata->state.lock, flags);

	wiiproto_req_accel(wdata, true);

	spin_unlock_irqrestore(&wdata->state.lock, flags);
@@ -665,26 +646,13 @@ static void wiimote_accel_close(struct input_dev *dev) 
	spin_lock_irqsave(&wdata->state.lock, flags);

	wiiproto_req_accel(wdata, false);

	spin_unlock_irqrestore(&wdata->state.lock, flags);



	hid_hw_close(wdata->hdev);

}



static int wiimote_ir_open(struct input_dev *dev)

{

	struct wiimote_data *wdata = input_get_drvdata(dev);

	int ret;



	ret = hid_hw_open(wdata->hdev);

	if (ret)

		return ret;



	ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);

	if (ret) {

		hid_hw_close(wdata->hdev);

		return ret;

	}



	return 0;

	return wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);

}



static void wiimote_ir_close(struct input_dev *dev)
@@ -692,7 +660,6 @@ static void wiimote_ir_close(struct input_dev *dev) 
	struct wiimote_data *wdata = input_get_drvdata(dev);



	wiimote_init_ir(wdata, 0);

	hid_hw_close(wdata->hdev);

}



static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
@@ -1091,8 +1058,6 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev) 
	hid_set_drvdata(hdev, wdata);



	input_set_drvdata(wdata->input, wdata);

	wdata->input->open = wiimote_input_open;

	wdata->input->close = wiimote_input_close;

	wdata->input->dev.parent = &wdata->hdev->dev;

	wdata->input->id.bustype = wdata->hdev->bus;

	wdata->input->id.vendor = wdata->hdev->vendor;
@@ -1193,6 +1158,7 @@ static void wiimote_destroy(struct wiimote_data *wdata) 
	input_unregister_device(wdata->ir);

	input_unregister_device(wdata->input);

	cancel_work_sync(&wdata->queue.worker);

	hid_hw_close(wdata->hdev);

	hid_hw_stop(wdata->hdev);



	kfree(wdata);
@@ -1224,10 +1190,16 @@ static int wiimote_hid_probe(struct hid_device *hdev, 
		goto err;

	}



	ret = hid_hw_open(hdev);

	if (ret) {

		hid_err(hdev, "cannot start hardware I/O\n");

		goto err_stop;

	}



	ret = input_register_device(wdata->accel);

	if (ret) {

		hid_err(hdev, "Cannot register input device\n");

		goto err_stop;

		goto err_close;

	}



	ret = input_register_device(wdata->ir);
@@ -1298,6 +1270,8 @@ static int wiimote_hid_probe(struct hid_device *hdev, 
err_ir:

	input_unregister_device(wdata->accel);

	wdata->accel = NULL;

err_close:

	hid_hw_close(hdev);

err_stop:

	hid_hw_stop(hdev);

err:

drivers/hid/hid-wiimote-ext.c

+0 −12
Original line number Diff line number Diff line
@@ -661,11 +661,6 @@ static DEVICE_ATTR(extension, S_IRUGO, wiiext_show, NULL); 
static int wiiext_input_open(struct input_dev *dev)

{

	struct wiimote_ext *ext = input_get_drvdata(dev);

	int ret;



	ret = hid_hw_open(ext->wdata->hdev);

	if (ret)

		return ret;



	atomic_inc(&ext->opened);

	wiiext_schedule(ext);
@@ -679,17 +674,11 @@ static void wiiext_input_close(struct input_dev *dev) 


	atomic_dec(&ext->opened);

	wiiext_schedule(ext);

	hid_hw_close(ext->wdata->hdev);

}



static int wiiext_mp_open(struct input_dev *dev)

{

	struct wiimote_ext *ext = input_get_drvdata(dev);

	int ret;



	ret = hid_hw_open(ext->wdata->hdev);

	if (ret)

		return ret;



	atomic_inc(&ext->mp_opened);

	wiiext_schedule(ext);
@@ -703,7 +692,6 @@ static void wiiext_mp_close(struct input_dev *dev) 


	atomic_dec(&ext->mp_opened);

	wiiext_schedule(ext);

	hid_hw_close(ext->wdata->hdev);

}



/* Initializes the extension driver of a wiimote */