diff options
| -rw-r--r-- | drivers/hid/wacom_sys.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index a8b7f16f76fa..25086287957e 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -110,12 +110,24 @@ static void wacom_feature_mapping(struct hid_device *hdev, { struct wacom *wacom = hid_get_drvdata(hdev); struct wacom_features *features = &wacom->wacom_wac.features; + u8 *data; + int ret; switch (usage->hid) { case HID_DG_CONTACTMAX: /* leave touch_max as is if predefined */ - if (!features->touch_max) - features->touch_max = field->value[0]; + if (!features->touch_max) { + /* read manually */ + data = kzalloc(2, GFP_KERNEL); + if (!data) + break; + data[0] = field->report->id; + ret = wacom_get_report(hdev, HID_FEATURE_REPORT, + data, 2, 0); + if (ret == 2) + features->touch_max = data[1]; + kfree(data); + } break; } } @@ -1280,6 +1292,8 @@ static int wacom_probe(struct hid_device *hdev, if (!id->driver_data) return -EINVAL; + hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; + wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL); if (!wacom) return -ENOMEM; |