On Tue, Aug 07, 2012 at 05:03:13PM +0200, Hans Petter Selasky wrote: > On Sunday 05 August 2012 10:33:13 Hans Petter Selasky wrote: > > On Friday 03 August 2012 10:32:47 Ed Schouten wrote: > > > 2012/8/1 Hans Petter Selasky <hsela...@c2i.net>: > > > > I think the problem is like this, that in order to re-use the unit > > > > numbers for USB serial tty devices, the USB stack needs to wait until a > > > > TTY is actually freed, right? Else you will have a panic on creating > > > > devfs entries having the same name. > > > > > > Indeed. So the USB code could simply pick a different unit number. > > > > Hi Ed, > > > > USB could use a different Unit number. Some questions: > > > > When can the previous unit number be re-used? Is there a callback for this? > > > > When can the USB serial code assume that it will not be called again and > > that all callbacks are drained? > > > > Hi, > > Can you try the attached patch and report back?
I applied the patch and reloaded ucom and uplcom. So far there were no power glitches so UPS did not dropped off the bus yet. I have a question regarding the changed fragment of code. Why don't you use unr(9) KPI to manage unit numbers ?
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