Re: [PATCH 3/5] input: keyboard: add COMPILE_TEST support for KEYBOARD_IMX_SC_KEY

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On Sat, Mar 07, 2020 at 12:18:38AM +0000, Anson Huang wrote:
> Hi, Dmitry
> 
> > Subject: Re: [PATCH 3/5] input: keyboard: add COMPILE_TEST support for
> > KEYBOARD_IMX_SC_KEY
> > 
> > On Fri, Mar 6, 2020 at 11:33 AM Dmitry Torokhov
> > <dmitry.torokhov@xxxxxxxxx> wrote:
> > >
> > > On Fri, Mar 06, 2020 at 11:42:34PM +0800, Anson Huang wrote:
> > > > Add COMPILE_TEST support to i.MX SC keyboard driver for better
> > > > compile testing coverage.
> > > >
> > > > Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
> > >
> > > Applied, thank you.
> > 
> > Actually, not:
> > 
> > ERROR: "imx_scu_irq_register_notifier"
> > [drivers/input/keyboard/imx_sc_key.ko] undefined!
> > ERROR: "imx_scu_get_handle" [drivers/input/keyboard/imx_sc_key.ko]
> > undefined!
> > ERROR: "imx_scu_call_rpc" [drivers/input/keyboard/imx_sc_key.ko]
> > undefined!
> > ERROR: "imx_scu_irq_unregister_notifier"
> > [drivers/input/keyboard/imx_sc_key.ko] undefined!
> > ERROR: "imx_scu_irq_group_enable"
> > [drivers/input/keyboard/imx_sc_key.ko] undefined!
> > make[1]: *** [scripts/Makefile.modpost:94: __modpost] Error 1
> > make: *** [Makefile:1282: modules] Error 2
> > 
> > If you want to enable compile test coverage you need to provide stubs for
> > the above functions.
> 
> These i.MX SCU drivers depends on IMX_SCU, I already add the COMPILE_TEST
> to IMX_SCU driver as well, that is why I put these patches in a patch series.

Adding "|| COMPILE_TEST" you are removing hard dependency on IMX_SCU,
which as you can see can result in broken build.

> Maybe
> I can add stubs as well to make sure build passed even when IMX_SCU is NOT compiled?
> Will send V2 to add stubs, it makes more sense.

It is up to you whether you make IMX_SCU buildable with COMPILE_TEST
and leave the sub-driver as is, or add the stubs and make sub-drivers
buildable even without IMX_SCU being present.

Thanks.

-- 
Dmitry



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