On Wednesday 15 January 2014 18:45:19 Andrew Lunn wrote: > > > But i'm also a little bit concerned by the "unique number" and this > > > ending up in /dev/input/by-path/platform-gpio_keys.3-event. Is this > > > path supposed to be stable? This unique number is not stable. An > > > unwitting change to the DT could cause its value to change. Do we need > > > to make it stable? > > > > > > > One possibility would be to create an artificial bus in DT for all > > gpio-keys devices, use #address-cells=<1> and #size-cells=<0> > > for it, and give each device a unique reg property. Not sure if that > > would be considered an elegant solution though. > > Hi Arnd > > Can i imply from your answer that you think > > /dev/input/by-path/platform-gpio_keys.3-event > > should be stable? No, I have no idea whether it should be or not. I was just trying to come up with a way to make it stable if that's desired. > A quick look at udev rules seems to suggestion this is an issue for > input/gpio-keys and maybe audio and video if there is a top level DT > property collecting the different sub devices together for ASOC and > V4L. For some other subsystems, we have entries in /aliases/ to sort them. Maybe that would work here to get a stable path independent of the location in DT. Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
