Am Dienstag, den 17.09.2019, 14:27 -0700 schrieb Abhishek Pandit- Subedi: > On a Realtek USB bluetooth device, I wanted a simple and consistent way > to put the device in reset during suspend (2 reasons: to save power and The device really uses less power if you reset it before suspendening it? > disable BT as a wakeup source). Resetting it in the suspend callback Then do not enable it. Something is strange. > causes a detach and the resume callback is not called. Hence the changes > in this series to do the reset in suspend_noirq. > > I looked into using PERSIST and reset on resume but those seem mainly > for misbehaving devices that reset themselves. No, not really. It is also for device that need to be reset if you use the RESET_RESUME quirk. But that is on resume(). You could introduce a new flag. But the _noirq method is kind of a hack, as USB really cannot operate without interrupts. Regards Oliver
