hgpk_discard_decay_hack 408 drivers/input/mouse/hgpk.c if (hgpk_discard_decay_hack(psmouse, x_diff, y_diff)) { hgpk_discard_decay_hack 439 drivers/input/mouse/hgpk.c if (hgpk_discard_decay_hack(psmouse, x, y)) {