Re: [Mspgcc-users] How do you get an ez430 going under Linux?

[Przemek K. <prz...@gm...>]

On 9/26/07, Oleg Verych (Gmane) <!gmane?ole...@fl...> wrote:

> The main problem is linux usb stack, as it is today, after 3 rewrites.
> Design prohibits driver to change usb configuration of the device. This
> is because usb driver in linux is not driver of the usb hardware, but
> usb-interface (as in usb spec.) driver. Changing configuration of the
> device, cuts trunk of the "driver", and everything falls down.
>
>
I don't understand the USB stack design all that well, so correct me if I
misunderstand your point. You seem to be saying that after a
reconfiguration, the original USB interface disappears, and so the kernel
driver loses access to the hardware.

However, for USB this should not be a problem---it's the same as if we
unplugged the old device and plugged a new one. The driver for the new
device should load, and start talking to the hardware on the new interface.
At any given steady state point, there should be a driver for each USB
interface the hardware presents.  How is that bad?