> > +STARFIVE TRNG DRIVER
> > +M: Jia Jie Ho <jiajie.ho@xxxxxxxxxxxxxxxx>
> > +S: Maintained
> > +F: Documentation/devicetree/bindings/rng/starfive*
> > +F: drivers/char/hw_random/starfive-trng.c
>
> minor nit (so don't submit another version just to fix this):
> This should be Supported, no?
>
Hi Conor,
I'll update this in next version together with other comments below.
> > diff --git a/drivers/char/hw_random/Makefile
> > b/drivers/char/hw_random/Makefile index 3e948cf04476..f68ac370847f
> > 100644
> > --- a/drivers/char/hw_random/Makefile
> > +++ b/drivers/char/hw_random/Makefile
> > @@ -47,3 +47,4 @@ obj-$(CONFIG_HW_RANDOM_XIPHERA) += xiphera-
> trng.o
> > obj-$(CONFIG_HW_RANDOM_ARM_SMCCC_TRNG) += arm_smccc_trng.o
> > obj-$(CONFIG_HW_RANDOM_CN10K) += cn10k-rng.o
> > obj-$(CONFIG_HW_RANDOM_POLARFIRE_SOC) += mpfs-rng.o
> > +obj-$(CONFIG_HW_RANDOM_STARFIVE) += starfive-trng.o
>
> Is "STARFIVE" a bit too general of a name here and in the Kconfig entry?
> I don't have a TRM for the JH7100, but this name (and the Kconfig text)
> would give me the impression that I can use it there too.
> Does this driver support both?
>
7100 uses a different trng module but this same generator might be used in
future products, so I left it generic. Would it be better to specify the product?
> > +static int starfive_trng_probe(struct platform_device *pdev)
[...]
> > + ret = devm_hwrng_register(&pdev->dev, &trng->rng);
> > + if (ret) {
> > + dev_err_probe(&pdev->dev, ret, "Failed to register
> hwrng\n");
> > + goto err_fail_register;
> > + }
> > +
> > + pm_runtime_use_autosuspend(&pdev->dev);
> > + pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
>
> > + pm_runtime_enable(&pdev->dev);
>
> > +
> > + return 0;
> > +
> > +err_fail_register:
>
> > + pm_runtime_disable(&pdev->dev);
>
> This was only enabled after the only goto for this label, does it serve a
> purpose?
> I know little about runtime PM, it just caught my eye.
> I looked at the other rng drivers that had calls to pm_runtime_enable(), but
> they all seem to do their pm enablement _before_ calling hwrng_register().
> Again, I am not familiar with runtime PM, but curious why you are doing
> things differently, that's all.
It does make more sense to move pm_runtime_enable before registering the
generator to align with codes in the goto label.
I'll fix this part.
Thanks again for reviewing the patches.
Best regards,
Jia Jie
