Re: [PATCH 2/5] usb: cdc-ncm: Set altsetting only when network interface is opened

On Wed, Feb 15, 2012 at 3:47 PM, Toby Gray [off-list ref] wrote:

Some NCM devices fail to send the NetworkConnection status if the host
is not trying to read from the control interrupt endpoint in the first
few seconds after the data interface alternate setting is selected.

I have a feeling that the problem description above is not correct:
more likely the fault is related to device initialization or other
state machine problem in device.

Looking at the trace, the patch serves its purpose, however there
might be other devices which can't get network status in time or get
similar problem. If this would be the case, driver could set a timer
after selecting alt1; in the absence of the connect message set alt0
to reset a function when timer expires and set alt1 again.

Regards,
Alexey
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