On Wed, 2013-03-06 at 09:44 +0800, Greg KH wrote: > On Wed, Mar 06, 2013 at 01:34:44AM +0000, Linlei (Lei Lin) wrote: > > Hello Mork, > > > > >> ------ Because in the embedded linux system, Android, or Chrome OS, > > >> etc. They don't integrate userspace usb_modeswitch utility for > > >> switching. > > > > >Why not? If they can upgrade the kernel, then they most certainly can install a userspace utility. > > > > >There is no excuse for an embedded system to do this differently. > > >Please see e.g. OpenWRT as an example of an embedded system doing this correctly. > > > > But currently Android and Chrome OS has not integrated the > > usb_modeswitch utility. > > That is not a kernel problem. I find it hard to believe that Chrome OS > would not gladly accept code to resolve this issue, can't you put it > into the modemmanager or whatever Chrome OS uses to handle their > wireless modems? They use ModemManager, and that's still not the best place to put modeswitching. The best place to modeswitch anything is usb_modeswitch. No sense duplicating the functionality that usb_modeswitch already supplies. Dan > > As for Android, sorry, you are on your own, you will just have to deal > with the individual OEMs that are incorporating your hardware :( > > > From a vendor's point of view, our purpose is to make our devices be > > supported natively by those OS. > > We have a solution, usb_modeswitch, any user should be using that. > > > So we consider that add the switch function to the kernel resolves the > > problem from the source. > > Then this function will be inherited by Android & Chrome OS. > > Don't circumvent horribly governed userspace projects by getting changes > into the Linux kernel. Go fix those projects instead. > > Good luck, > > greg k-h > -- > 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 -- 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
