On Mon, Mar 4, 2019 at 9:21 PM Oded Gabbay <oded.gab...@gmail.com> wrote: > > On Mon, Mar 4, 2019 at 10:04 PM Arnd Bergmann <a...@arndb.de> wrote: > > > > When CONFIG_HWMON is disabled, we currently get a link error for this > > driver: > > > > ERROR: "hwmon_device_unregister" [drivers/misc/habanalabs/habanalabs.ko] > > undefined! > > ERROR: "hwmon_device_register_with_info" > > [drivers/misc/habanalabs/habanalabs.ko] undefined! > > > > As the hardware monitoring is not a required part of the functionality, > > make it possible to compile without HWMON by ignoring all that functionality > > depending on the configuration.
> Hi Arnd, > I sent a patch to gkh to fix this last week (and he merged that into > his tree), but I took a different approach of selecting HWMON in > kconfig (with an added depends on of HAS_IOMEM to prevent dependency > breakage). > I don't really want the driver to load without HWMON support. I took > the example from AMD's amdgpu driver which does the same thing. Ok, that's fine, I see your fix now. I tried to avoid doing this in Kconfig, as we already have a mix of 'depends on HWMON' and 'select HWMON', which sooner or later is likely to cause circular dependencies. Since you don't have any 'depends on' statements so far, it's not a problem for you though. Arnd