Hi Rob, On Wed, Jan 25, 2017 at 02:23:41PM -0600, Rob Herring wrote: > diff --git a/include/linux/serdev.h b/include/linux/serdev.h > new file mode 100644 > index 000000000000..4f8f76d02ca8 > --- /dev/null > +++ b/include/linux/serdev.h > > [...] > > +#ifdef CONFIG_SERIAL_DEV_BUS > > [method definitions] > > #else > > [method stubs] > > #endif > > [...] This should also test for SERIAL_DEV_BUS=m, so use #if IS_ENABLED(CONFIG_SERIAL_DEV_BUS) (This was found by the kbuild test robot) -- Sebastian
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