On Mon, 20 Apr 2020 01:20:40 +0300 Andy Shevchenko <andriy.shevchenko@xxxxxxxxx> wrote: > On Sat, Apr 18, 2020 at 10:55:33AM +0200, Boris Brezillon wrote: > > On Fri, 17 Apr 2020 16:21:47 +0800 > > "Ramuthevar,Vadivel MuruganX" > > <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote: > > > > > From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> > > > > +static const struct of_device_id lgm_nand_match[] = { > > > + { .compatible = "intel,lgm-nand", }, > > > + {} > > > +}; > > > +MODULE_DEVICE_TABLE(of, lgm_nand_match); > > > > You probably have a missing "depends on OF" in your Kconfig. > > Since it's using device property API, dependency is not needed. > There's no compile-time dependency, but this driver will be pretty useless if all its users have the NAND controller node defined in their DT and CONFIG_OF is not enabled. I guess the OF option is selected by arches, so explicitly depending on OF is only relevant if you change the dependency rules as suggested in my other reply.