diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hid/hid-waltop.c | 45 |
1 files changed, 7 insertions, 38 deletions
diff --git a/drivers/hid/hid-waltop.c b/drivers/hid/hid-waltop.c index 9a48438090a..745e4e9a8cf 100644 --- a/drivers/hid/hid-waltop.c +++ b/drivers/hid/hid-waltop.c @@ -638,28 +638,10 @@ static __u8 sirius_battery_free_tablet_rdesc_fixed[] = { 0xC0 /* End Collection */ }; -struct waltop_state { - u8 pressure0; - u8 pressure1; -}; - static int waltop_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; - struct waltop_state *s; - - s = kzalloc(sizeof(*s), GFP_KERNEL); - if (s == NULL) { - hid_err(hdev, "can't allocate device state\n"); - ret = -ENOMEM; - goto err; - } - - s->pressure0 = 0; - s->pressure1 = 0; - - hid_set_drvdata(hdev, s); ret = hid_parse(hdev); if (ret) { @@ -675,7 +657,6 @@ static int waltop_probe(struct hid_device *hdev, return 0; err: - kfree(s); return ret; } @@ -732,27 +713,18 @@ static __u8 *waltop_report_fixup(struct hid_device *hdev, __u8 *rdesc, static int waltop_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data, int size) { - /* If this is a pen input report of a tablet with PID 0038 */ - if (hdev->product == USB_DEVICE_ID_WALTOP_PID_0038 && - report->type == HID_INPUT_REPORT && - report->id == 16 && - size == 8) { - struct waltop_state *s = hid_get_drvdata(hdev); - + /* If this is a pen input report */ + if (report->type == HID_INPUT_REPORT && report->id == 16 && size >= 8) { /* - * Ignore maximum pressure reported when a barrel button is - * pressed. + * Ignore reported pressure when a barrel button is pressed, + * because it is rarely correct. */ /* If a barrel button is pressed */ if ((data[1] & 0xF) > 1) { - /* Use the last known pressure */ - data[6] = s->pressure0; - data[7] = s->pressure1; - } else { - /* Remember reported pressure */ - s->pressure0 = data[6]; - s->pressure1 = data[7]; + /* Report zero pressure */ + data[6] = 0; + data[7] = 0; } } @@ -806,10 +778,7 @@ static int waltop_raw_event(struct hid_device *hdev, struct hid_report *report, static void waltop_remove(struct hid_device *hdev) { - struct waltop_state *s = hid_get_drvdata(hdev); - hid_hw_stop(hdev); - kfree(s); } static const struct hid_device_id waltop_devices[] = { |