On Thu, Oct 06, 2011 at 12:00:47PM -0400, Alan Stern wrote: > On Thu, 6 Oct 2011, Matthew Garrett wrote: > > > Userspace may want to make policy decisions based on whether or not a > > given USB port is externally visible. Add a per-device member and support > > for exposing it in sysfs. Information sources to populate it will be > > added later. > > Why do you refer to this as "visibility"? You're really talking about > whether or not a sub-device of a compound device is removable -- or at > least, that's the terminology used by the USB spec. (The spec refers > to ports, but you are attaching the sysfs attribute to devices.) > > According to the way you'd do it, in a USB keyboard with a built-in > hub, the keyboard would be hidden, not visible! Mm. Yes, the semantics here are a bit off - I started with the ACPI side of things, which does use visibility. Removable is probably a better bet. Any objections to it if that's changed? -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- 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
