RE: [PATCH 2/3] hwrng: starfive - Add TRNG driver for StarFive SoC

[JiaJie Ho]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Sent: Thursday, December 22, 2022 5:44 PM
> To: JiaJie Ho <jiajie.ho@xxxxxxxxxxxxxxxx>; Olivia Mackall
> <olivia@xxxxxxxxxxx>; Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>; Rob
> Herring <robh+dt@xxxxxxxxxx>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@xxxxxxxxxx>
> Cc: Emil Renner Berthing <kernel@xxxxxxxx>; Conor Dooley
> <conor.dooley@xxxxxxxxxxxxx>; linux-crypto@xxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-
> riscv@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/3] hwrng: starfive - Add TRNG driver for StarFive SoC
> 
> > How do I properly handle __maybe_unused functions in this scenario?
> 
> The same as in other files. Use `git grep`
> 
> > Will it help if I add #define as follows:
> >
> > #ifdef CONFIG_PM
> > #define STARFIVE_RNG_PM_OPS (&starfive_rng_pm_ops) #else #define
> > STARFIVE_RNG_PM_OPS NULL #endif
> 
> I talked only about of_match_ptr(). This is not of_match_ptr and should have
> its own syntax (pm_sleep_ptr + static DEFINE_SIMPLE_DEV_PM_OPS)
> 
> >
> > static struct platform_driver starfive_trng_driver = {
> >         .probe  = starfive_trng_probe,
> >         .driver = {
> >                 .name           = "starfive-trng",
> >                 .pm             = STARFIVE_RNG_PM_OPS,
> >                 .of_match_table = of_match_ptr(trng_dt_ids),
> >         },
> > };
> >
> > I did build the patches with the tools mentioned but did not get warnings.
> > Do I need a specific version, or have I done something wrong?
> 
> You just need proper COMPILE_TEST config with OF disabled.
> 

I'll update the patch accordingly.
Thanks again for the comments and suggestions.

Regards,
Jia Jie