On 2018/08/15 09:56, Stuart Henderson wrote: > On 2018/08/14 18:43, Bryan Vyhmeister wrote: > > On Tue, Aug 14, 2018 at 05:53:43PM +0300, Denis wrote: > > > Most of modern modems have serial discipline ports and USB Mobile > > > Broadband Interface Model (MBIM) interface in some port compositions > > > simultaneously. It seems very useful to have different disciplines > > > supported by umsm(4) and umb(4) drivers on the same device. > > > > > <snip> > > > > > > Does it possible to have simultaneously operated AT + NMEA ports by > > > umsm(4)driver and MBIM interface by umb(4) driver on the same MC7304 > > > device in 6.3? > > > > What is the advantage in having a device attach to both umsm(4) and > > umb(4)? What are you trying to accomplish? The EM7455 worked perfectly > > with umb(4) until your previous umsm(4) diff and now it only attaches as > > umsm(4). Are you wanting to send SMS messages or something like that > > with your devices? > > > > Bryan > > > > Denis has a good point because umsm is needed for GPS and as you > suggest SMS. > > What determines which driver attaches when a device is supported by > multiple drivers? Perhaps the simplest option without more complex work > to support different interfaces on different drivers would be to have > the device attach to umb by default but attach to umsm instead if umb is > disabled in the kernel. Then at least a standard kernel could be used > with "disable umb" from boot config. >
(In case it's not clear I definitely agree with backing out the change for now, the above is me considering ways forward because it definitely seems reasonable to want to use the GPS ..)
