On Fri, Sep 06, 2013 at 02:02:04PM -0700, Sarah Sharp wrote: > On Fri, Sep 06, 2013 at 06:24:43PM +0800, Huang Rui wrote: > > The following patch is required to resolve remote wake issues with > > certain devices. > > > > Issue description: > > If the remote wake is issued from the device in a specific timing > > condition while the system is entering sleep state then it may cause > > system to auto wake on subsequent sleep cycle. > > > > Root cause: > > Host controller rebroadcasts the Resume signal > 100 µseconds after > > receiving the original resume event from the device. For proper > > function, some devices may require the rebroadcast of resume event > > within the USB spec of 100µS. > > > > Workaroud: > > 1. Filter the special platforms, then judge of all the usb devices are > > mouse or not. And get out the port id which attached a mouse with Pixart > > controller. > > 2. Then reset the port which attached issue device during system resume > > from S3. > > Why are you doing this in the xHCI driver? You're resetting a device > from the host controller driver without letting the USB core know about > it? That seems like a bad idea. Ok, I see Alan has already suggested an alternative way to do this in the USB core. Please follow his suggestion. Sarah Sharp -- 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
