On Fri, May 11, 2012 at 11:35:43AM -0700, Greg KH wrote: > On Fri, May 11, 2012 at 01:44:26PM -0400, Alan Stern wrote: > > On Sat, 12 May 2012, Lan Tianyu wrote: > > > So I should work on the external ports without devices firstly and > > > add the sys file for user to control? > > > > Yes, I think so. It will be less controversial and probably simpler. > > When that mechanism is ready, you should be able to use it > > automatically for unconnectable ports. > > > > One tricky thing: In theory, there should be a separate sysfs file for > > each port. That seems like a lot of overhead though; is there any way > > to present the information in a single file that won't offend sysfs > > purists? > > Why is that a lot of "overhead"? It's what, 7-9 files max? As Sarah > points out, one file for all ports is racy and can get to be a mess. > > But then again, I'm a "sysfs purist" :) Theoretically there's no maximum number for xHCI root ports, so I wouldn't be so sure you'll only have 9 files on future xHCI hosts. Sarah Sharp -- 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
