diff options
| -rw-r--r-- | src/synaptics.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/synaptics.c b/src/synaptics.c index a455b6f..181e88a 100644 --- a/src/synaptics.c +++ b/src/synaptics.c @@ -1974,6 +1974,14 @@ get_delta(SynapticsPrivate *priv, const struct SynapticsHwState *hw, /* report edge speed as synthetic motion. Of course, it would be * cooler to report floats than to buffer, but anyway. */ + + /* FIXME: When these values go NaN, bad things happen. Root cause is unknown + * thus far though. */ + if (isnan(priv->frac_x)) + priv->frac_x = 0; + if (isnan(priv->frac_y)) + priv->frac_y = 0; + tmpf = *dx + x_edge_speed * dtime + priv->frac_x; priv->frac_x = modf(tmpf, &integral); *dx = integral; |