On Wed, Nov 21, 2012 at 3:52 PM, Greg Kroah-Hartman <gre...@linuxfoundation.org> wrote: > On Wed, Nov 21, 2012 at 02:44:31PM +0000, Grant Likely wrote: >> The "platform_bus" (note: not platform_bus_type) only exists as an empty >> directory to put platform devices into. However, it really doesn't make >> sense to segregate all the platform devices into a sub directory when >> typically they are memory mapped devices that doen't go through any >> particular bus. Particularly on embedded type platforms the platform_bus >> directory doesn't add anything. >> >> However, this will probably just end up breaking some userspace that >> depends on the /sys/devices/platform/ path to be present (no matter how >> much we protest that userspace must not depend on paths in sysfs). So >> while I'm seriously proposing this change, it may just be unacceptable >> ABI breakage > > If the devices don't show up under platform/ where are they going to be > at now, virtual/ ? That doesn't sound like a good plan, they should be > somewhere "useful".
Just a note to keep in mind: We usually need and want devices to have a bus or class. Devices without a "subsystem" are invisible to udev, and do not get proper coldplug support at bootup. Kay -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
