On Thu, Jun 07, 2012 at 04:50:25PM -0300, Italo Migotto wrote: > Hi, > > right now I have approximately 50 USB devices plugged into my server, > and together they create more than 250 serial interfaces in the system > (up to 5 /dev/ttyUSBXX each), the problem is that I need to plug some > more and it seems I´ve reached the limit of 255 interfaces, so my > question is: > > is there a way to increase that limit? Or, if there isn´t, can I > remove the unused interfaces somehow? I only access one of these 5 for > each device, not really sure if the other 4 are necessary. Wow, you are the first person that I know of, in the past 14 years of the usb serial code, that has hit this max number, nice job :) I can increment the number to be larger, but what is the correct number to move to? I guess I can just make it dynamic, which should give you 4k minors (I think, I can't recall the minor max number at the moment, it probably is bigger.) If anyone else wants to send in patches doing this before I get a chance to (which might be a while), I'd be glad to accept them. thanks, greg k-h -- 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
