On Tue, Mar 19, 2019 at 05:19:24PM +0000, Karoly Pados wrote: > >> On Di, 2019-03-19 at 11:36 +0100, Johan Hovold wrote: > > This patch just added the missing auto-resume handling, but, yeah, > > there may be devices out there for which things may get out of sync if > > they lose state over suspend. I think Karoly confirmed this wasn't the > > case with cp210x. > > The way I tested this is very simple: I just toggled an output pin. If > the device would lose its state during suspend, then the pin state > would return to its factory default as soon the it went into suspend. > Since the LED stayed stable over suspend (I connected an LED), it > seems these devices don't lose state. I did not, however, test all > device state in detail to see if every setting remained. I cannot > vouch for whether *all* state is retained. I think your test should be sufficient. Thanks, Johan
