Comment 6 for bug 1643812

Ｆｏｒ　most of the situations like one pulseaudio port only has one jack, this patch will not bring any change. So there is no potential regression.

For the situation of one pulseaudio port has 2 or more jacks, it will bring some change, in the past, if one of the jacks is plugged and other jacks are not plugged, the pulseaudio will print out "Availability of port '%s' is inconsistent!" and will not set this pulseaudio port to available, this is a bug for pulseaudio. After applying this patch, this issue can be addressed by this patch. I also think it will not bring any regression.