On Mon, 26 Nov 2012, Daniele Palmas wrote:

> Maybe I have to explain better my scenario:
> 
> Modem is registered to the network. Host suspended, I want my device
> to wake up the host when it receives, for example, a call or an sms.

What if the modem isn't registered to the network?  For example, if the 
cdc-acm driver is unloaded.  Does it need remote wakeup to be enabled 
then?

> This doesn't happen if the driver doesn't send the
> DEVICE_REMOTE_WAKEUP request. Moreover without this request the modem
> is bricked.

Are you sure that "bricked" is the right word?  It means that the 
modem's firmware got corrupted so that it is impossible ever to use the 
modem again unless an EPROM chip is replaced.  Maybe you just meant 
that the modem crashed.

Alan Stern

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