On Tue, 2 Feb 2021 09:52:08 +0530 Manivannan Sadhasivam wrote: > > > I don't see the connection here, sorry. > > > > For instance USB_NET_CDC_MBIM driver creates the /dev/cdc-wdmX chardev node for > > configuring the modems which supports MBIM protocol over USB. Like that, this > > driver creates /dev/mhiX_MBIM chardev node for configuring the modem over MHI > > bus instead of USB. The question arised why we are creating a chardev node for > > each supported configuration (channels in the case of MHI) and why can't we use > > the existing /dev/cdc-wdmZ interfaces? The anwser is there is no standard > > subsystem for WWAN and all the drivers represent a chardev which gets used by > > the userspace tools such a Network manager for establishing connection. > > > > And /dev/cdc-wdmX is restricted to the USB CDC devices. > > > > Hope this clarifies! > > Jakub, Dave, Adding you both to get your reviews on this series. I've > provided an explanation above and in the previous iteration [1]. Let's be clear what the review would be for. Yet another QMI chardev or the "UCI" direct generic user space to firmware pipe?
