diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index 2220168bf116..fac75c202453 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -54,7 +54,7 @@ static void wacom_wac_queue_insert(struct hid_device *hdev, { bool warned = false; - while (kfifo_avail(fifo) < size) { + while (kfifo_avail(fifo) < size && !kfifo_is_empty(fifo)) { if (!warned) hid_warn(hdev, "%s: kfifo has filled, starting to drop events\n", __func__); warned = true; @@ -62,7 +62,9 @@ static void wacom_wac_queue_insert(struct hid_device *hdev, kfifo_skip(fifo); } - kfifo_in(fifo, raw_data, size); + if (!kfifo_in(fifo, raw_data, size)) + hid_warn_ratelimited(hdev, "%s: report is too large (%d)\n", + __func__, size); } static void wacom_wac_queue_flush(struct hid_device *hdev,