On Tue, Jul 18, 2017 at 9:02 AM, Jeffy Chen <jeffy.chen at rock-chips.com> wrote: > I was testing earlycon with 8250 dw serial console. And it hangs in > these cases: > 1/ kernel hang when calling early write function after free_initmem: > a) the earlycon not disabled after the init code(due to keep_bootcon or > not specify a real console to switch to) > b) the early write func is marked as __init, for example 8250_early. > This serial fix 1/ case only. Here is another opinion. I can tell that conditions to get into the trouble are quite unusual or rare. Any rationale behind why one needs such a combination of parameters? P.S. For doulble output ask Sergey and Petr (they are quite concerned about it). Actually strange I didn't see their names in Cc list for console related stuff, -- With Best Regards, Andy Shevchenko
