On Tue, Dec 18, 2012 at 11:11:15AM -0500, Alan Stern wrote: > I suggest that we remove the CONFIG_USB_SUSPEND option, starting in > 3.9. Practically everyone enables it, and the amount of code it > protects is fairly small (just portions of usbcore, nothing in the > drivers). > > Basically, if people don't want their kernels to save power then they > should turn off CONFIG_PM. > > Objections, anyone? Sorry, I may not agree with this due to below reasons: - Some customers wants system PM, but do not want usb runtime power management, such as Car Navigation System. They want system responds fast after user press power on key, but they don't care usb power during runtime. - For embedded system, we have may SoCs, and USB low power mode is the most challenge job when we bring up new USB module, usually, our develop sequence like: basic USB functions --> USB function after System suspend/resume --> USB Runtime PM. We usually disable USB runtime PM at first. > > Alan Stern > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
