diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 12 | ||||
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 11 |
2 files changed, 20 insertions, 3 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index c28ef86c7c67..ac28f08c3866 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -951,6 +951,18 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id) hdev->quirks |= HID_QUIRK_MULTI_INPUT; hdev->quirks |= HID_QUIRK_NO_EMPTY_INPUT; + /* + * Handle special quirks for Windows 8 certified devices. + */ + if (id->group == HID_GROUP_MULTITOUCH_WIN_8) + /* + * Some multitouch screens do not like to be polled for input + * reports. Fortunately, the Win8 spec says that all touches + * should be sent during each report, making the initialization + * of input reports unnecessary. + */ + hdev->quirks |= HID_QUIRK_NO_INIT_INPUT_REPORTS; + td = devm_kzalloc(&hdev->dev, sizeof(struct mt_device), GFP_KERNEL); if (!td) { dev_err(&hdev->dev, "cannot allocate multitouch data\n"); diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 99418285222c..55ea9c40140e 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -807,12 +807,17 @@ void usbhid_init_reports(struct hid_device *hid) { struct hid_report *report; struct usbhid_device *usbhid = hid->driver_data; + struct hid_report_enum *report_enum; int err, ret; - list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) - usbhid_submit_report(hid, report, USB_DIR_IN); + if (!(hid->quirks & HID_QUIRK_NO_INIT_INPUT_REPORTS)) { + report_enum = &hid->report_enum[HID_INPUT_REPORT]; + list_for_each_entry(report, &report_enum->report_list, list) + usbhid_submit_report(hid, report, USB_DIR_IN); + } - list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) + report_enum = &hid->report_enum[HID_FEATURE_REPORT]; + list_for_each_entry(report, &report_enum->report_list, list) usbhid_submit_report(hid, report, USB_DIR_IN); err = 0; |