On Thu, Jun 06, 2013 at 11:01:12AM -0400, Dave Jones wrote: > On Wed, Jun 05, 2013 at 10:54:26AM -0700, Greg KH wrote: > > Here are 3 patches that I've tested out on my system with only a small > > number of devices, but it seems to work, so why not let others try it > > out... > > > > These patches make the USB to serial core have the ability to support up > > to 3000 devices at once now. > > I'm curious how this works. What systems have 3000 usb ports ? > Or are there some kind of multiplexer devices out there ? > (If so, I'd like a link, I could use one of those). You don't need a multiplexer, you can have a bunch of different USB root hubs in PCI slots, with USB hubs plugged into them, and lots of multi-port USB devices connected to them. Tobias has such a system with 272 single-port USB to serial devices connected, so it's not impossible to create. In thinking about it some more, I'll change that number to 500 for now, as it's a static array within the tty layer, and then work on making that dynamic so we don't have any limitations other than the number of minor numbers for a single major. 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
