On Fri, 07 Oct 2011 10:33:09 +0500 "G, Manjunath Kondaiah" <manjugk at ti.com> wrote: > > The gpio library should return -EPROBE_DEFER in gpio_request > if gpio driver is not ready. Why not use the perfectly good existing error codes we have for this ? We have EAGAIN and EUNATCH both of which look sensible.