linux-kernel - Re: [PATCH v3 3/3] soc: rockchip: Fix compile-testing SoC drivers

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Message-ID: <20220426201441.GJ4093517@roeck-us.net>
Date:   Tue, 26 Apr 2022 13:14:41 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Brian Norris <briannorris@...omium.org>
Cc:     Heiko Stuebner <heiko@...ech.de>, Arnd Bergmann <arnd@...db.de>,
        Robin Murphy <robin.murphy@....com>,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/3] soc: rockchip: Fix compile-testing SoC drivers

On Mon, Apr 25, 2022 at 06:45:44PM -0700, Brian Norris wrote:
> Similar to commit 7f94b69ece51 ("ARM: ixp4xx: fix compile-testing soc
> drivers").
> 
> drivers/soc/rockchip/Kconfig makes plenty of provision for configuring
> drivers either for ARCH_ROCKCHIP or for COMPILE_TEST. But
> drivers/soc/Makefile pulls the rug out from under us, by refusing to
> build anything if we specified COMPILE_TEST but not ARCH_ROCKCHIP.
> 
> Currently, I'm not aware of anything that breaks without this patch, but
> it certainly makes for confusing builds (CONFIG_ROCKCHIP_PM_DOMAINS=y,
> but we didn't actually compile the driver?) and leaves room for future
> error (I have pending patches that break confusingly with COMPILE_TEST=y
> even though their Kconfig dependencies seem correct [1]).
> 
> Defer to drivers/soc/rockchip/{Makefile,Kconfig} to do the right thing.
> 
> [1] e.g.,
> https://lore.kernel.org/linux-rockchip/20220405184816.RFC.2.I2d73b403944f0b8b5871a77585b73f31ccc62999@changeid/
> [RFC PATCH 2/2] PM / devfreq: rk3399_dmc: Block PMU during transitions
> 
> Signed-off-by: Brian Norris <briannorris@...omium.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
> 
> Changes in v3:
>  * Drop ARM||ARM64 dependency, now that bare dsb()s have been removed
> 
> Changes in v2:
>  * Depend on ARM||ARM64
> 
>  drivers/soc/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
> index fd7717d597fc..4c91705a8bb3 100644
> --- a/drivers/soc/Makefile
> +++ b/drivers/soc/Makefile
> @@ -23,7 +23,7 @@ obj-y				+= pxa/
>  obj-y				+= amlogic/
>  obj-y				+= qcom/
>  obj-y				+= renesas/
> -obj-$(CONFIG_ARCH_ROCKCHIP)	+= rockchip/
> +obj-y				+= rockchip/
>  obj-$(CONFIG_SOC_SAMSUNG)	+= samsung/
>  obj-$(CONFIG_SOC_SIFIVE)	+= sifive/
>  obj-y				+= sunxi/
> -- 
> 2.36.0.rc2.479.g8af0fa9b8e-goog
>