> Am Freitag, 19. Februar 2010 11:12:22 schrieb Torgny Johansson: > > Hi! > > > > Is there any way to set the usb autosudpend idle-delay time > in smaller > > increments than 1s? We're seeing some issues with a 0s delay (not > > investigated much yet) but all is good with a delay of 1s. > > 0s is dangerous because you cannot be sure all transfered > data has been processed. Currently the granularity is in > seconds without a way around that. Ok > > > We're curious if there's a way to finetune the delay or if there's > > some obvious reason for having 1s increments that we're not > aware of? > > Maybe the gain of having finer grained control is negligable? > > There's no obvious reason to give the delay in seconds. There > is an obvious reason to suspect that a delay of 0 will fail > on many devices. There must be a lower limit that is device > specific. We are pretty sure it is below 1s. > > The original idea was that anything lower than 1s would not > make a significant difference. That however is an assumption > without experimental verification. Right, I too doubt that having e.g. 0,5s would make much of a difference from 1s but it would be interesting to try. > > Shall I understand this as a request for a patch that allows > milisecond resolution? If that is possible it would be highly appreciated. We would be very happy to test drive such a patch. Regards Torgny -- 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
