On Tue, 31 Jul 2012 16:50:59 -0700, Greg KH wrote: > On Fri, Jul 27, 2012 at 10:14:59PM +0200, Jean Delvare wrote: > > Right now we have support for explicit platform device IDs, as well as > > ID-less platform devices when a given device type can only have one > > instance. However there are cases where multiple instances of a device > > type can exist, and their IDs aren't (and can't be) known in advance > > and do not matter. In that case we need automatic device IDs to avoid > > device name collisions. > > > > I am using magic ID value -2 (PLATFORM_DEVID_AUTO) for this, similar > > to -1 for ID-less devices. The automatically allocated device IDs are > > global (to avoid an additional per-driver cost.) We keep note that the > > ID was automatically allocated so that it can be freed later. > > > > Note that we also restore the ID to PLATFORM_DEVID_AUTO on error and > > device deletion, to avoid avoid unexpected behavior on retry. I don't > > really expect retries on platform device addition, but better safe > > than sorry. > > > > Signed-off-by: Jean Delvare <[email protected]> > > Cc: Greg Kroah-Hartman <[email protected]> > > Looks sane to me, want me to queue it up for 3.7?
Yes, please! Thanks, -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
