Thanks for the response David, but somehow I want to recover, I use the asynchronous, usb_submit_urb call and the call back never returns...
any idea why that would happen, I have no visibility beyond my layer...! when would the host, think the device is dead? no of PINGS? what is the condition under which the host would think device ceases to exist... but I do see the IN tokens happening in my IN endpoints.. On 1/13/08, David Brownell <[EMAIL PROTECTED]> wrote: > > I am trying to send 64 byte packets from a linux host into a device at > > the rate of 4000 packets/second > > If that rate is critical, then it should be a periodic transfer ... > likely an "interrupt" transfer. > > > > it is a bulk endpoint > > i submit one URB per packet > > and the device is a modem, packet deliantion is critical > > Sounds like a badly designed modem. Notice how it won't work right > at full speed, since it can't possibly get that same rate. > > Also, consider that there are many millions of working USB modems > that have shipped *without* that oddball 4000 packet/sec requirement. > > - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
