diff options
| -rw-r--r-- | drivers/hid/wacom_wac.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 36010c515f39..22b0d281ff5c 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -2510,9 +2510,14 @@ static void wacom_wac_pen_event(struct hid_device *hdev, struct hid_field *field wacom_wac->hid_data.barrelswitch3 = value; return; case WACOM_HID_WD_SEQUENCENUMBER: - if (wacom_wac->hid_data.sequence_number != value) - hid_warn(hdev, "Dropped %hu packets", (unsigned short)(value - wacom_wac->hid_data.sequence_number)); + if (wacom_wac->hid_data.sequence_number != value) { + int sequence_size = field->logical_maximum - field->logical_minimum + 1; + int drop_count = (value - wacom_wac->hid_data.sequence_number) % sequence_size; + hid_warn(hdev, "Dropped %d packets", drop_count); + } wacom_wac->hid_data.sequence_number = value + 1; + if (wacom_wac->hid_data.sequence_number > field->logical_maximum) + wacom_wac->hid_data.sequence_number = field->logical_minimum; return; } |