Hi Pantelis, On Thu, 15 Jan 2015 18:25:22 +0200, Pantelis Antoniou wrote: > The remove method of the mux gets called and on it’s remove method i2c_del_mux_adapter is called, > which in turn calls i2c_del_adapter() which hangs. > > Anyway, finally figured out what the problem was, a reference was held, and not released properly in > the i2c notifier pathc. > > I’ll send out an updated patch later today. > > > Having that call "wait" for the other release call to happen is really > > old, as Jean points out, from 2003. We have "fixed" sysfs since then to > > detach the files from the devices easier, we used to have some nasy > > reference count issues in that area. Perhaps this isn't needed anymore, > > It’s awfully easy to get a hang with this blocking wait. Turns a memory leak into a hard hang. Turns an invisible memory leak into a visible bug, giving you the opportunity to fix it. You should be grateful ;-) That being said, if this completion serves no other purpose then it can go away, I don't mind. -- Jean Delvare SUSE L3 Support -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
