On Wed, 28 Aug 2013, Greg Kroah-Hartman wrote: > > [Q] Why the special devices are only mice? Would high speed devices > > such as 3G modem or USB Bluetooth adapter trigger this issue? > > - Current this sensitivity is only confined to devices that use Pixart > > controllers. This controller is designed for use with LS mouse > > devices only. We have not observed any other devices failing. There > > may be a small risk for other devices also but this patch (reset > > device in resume phase) will cover the cases if required. > > Then just do this "quirk" for Pixart controller devices. Don't penalize > everyone else.
Is there any way to detect when a device uses a Pixart controller? I don't see how you could tell. > > I got it. Do you mean if I want do filter usb devices by usb mouse, I > > should do it at hid or usbhid level? > > Neither, you could "miss" a mouse at those levels as well. > > Think about userspace control of USB devices, as well as mice that don't > use the HID layer (rare, but I've seen it happen.) > > Again, don't filter for a "mouse", filter for the controller that you > need to fix. What if it's not possible to do this? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
