Hello Alan, 2012/11/26 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > 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? > That is a good question: in my specific scenario it is not useful to have the remote wakeup enabled if the cdc-acm driver is unloaded. But, though at the moment I cannot identify any, maybe there are situations in which it is useful to have the remote wakeup enabled even if the driver is not loaded. >> 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. > You are right, sorry for my poor English... The modem is crashed, but after the device reset it still works. Regards, Daniele -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
