linux-kernel - Re: [PATCH 1/2] irqchip: define EXYNOS_IRQ

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Date:   Sat, 7 Dec 2019 14:37:36 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Hyunki Koo <hyunki00.koo@...il.com>
Cc:     linux@...linux.org.uk, kgene@...nel.org, tglx@...utronix.de,
        jason@...edaemon.net, maz@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        kernel-team@...roid.com, Hyunki Koo <hyunki00.koo@...sung.com>
Subject: Re: [PATCH 1/2] irqchip: define EXYNOS_IRQ_COMBINER

On Sat, 7 Dec 2019 at 14:28, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> On Sat, Dec 07, 2019 at 10:00:48PM +0900, Hyunki Koo wrote:
> > From: Hyunki Koo <hyunki00.koo@...sung.com>
> >
> > Not all exynos device have IRQ_COMBINER.
> > Thus add the config for EXYNOS_IRQ_COMBINER.
> >
> > Signed-off-by: Hyunki Koo <hyunki00.koo@...sung.com>
> > ---
> >  drivers/irqchip/Kconfig  | 7 +++++++
> >  drivers/irqchip/Makefile | 2 +-
> >  2 files changed, 8 insertions(+), 1 deletion(-)
> >
>
> Hi,
>
> There is no changelog and versioning of this patch so I do not
> understand how it differs with previous. It's a resend? v2? It brings
> the confusion and looks like you're ignoring previous comments.
>
> Looks the same and looks like breaking Exynos platforms in the same way.
>
> If you not want to skip combiner on ARMv8, it makes sense, then please
> follow the approach we did for Pinctrl drivers (PINCTRL_EXYNOS_ARM and
> PINCTRL_EXYNOS_ARM64).
>
> Best regards,
> Krzysztof

Ah, now I see the second patch. Still you break bisect which requires
specific ordering of patches or squashing them into one. Optionally
this could be default=y if ARCH_EXYNOS && ARM. I prefer just squashing
both into one patch in this case.

>
> > diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
> > index ba152954324b..3ed7b7f2ae26 100644
> > --- a/drivers/irqchip/Kconfig
> > +++ b/drivers/irqchip/Kconfig
> > @@ -499,4 +499,11 @@ config SIFIVE_PLIC
> >
> >          If you don't know what to do here, say Y.
> >
> > +config EXYNOS_IRQ_COMBINER
> > +     bool "Samsung Exynos IRQ combiner support"

Now point it to be visible. Only for COMPILE_TEST

> > +     depends on ARCH_EXYNOS

Since you make it a separate option, make it COMPILE_TEST.

Best regards,
Krzysztof

> > +     help
> > +       Say yes here to add support for the IRQ combiner devices embedded
> > +       in Samsung Exynos chips.
> > +
> >  endmenu
> > diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
> > index e806dda690ea..60d7c7260fc3 100644
> > --- a/drivers/irqchip/Makefile
> > +++ b/drivers/irqchip/Makefile
> > @@ -9,7 +9,7 @@ obj-$(CONFIG_ARCH_BCM2835)            += irq-bcm2835.o
> >  obj-$(CONFIG_ARCH_BCM2835)           += irq-bcm2836.o
> >  obj-$(CONFIG_DAVINCI_AINTC)          += irq-davinci-aintc.o
> >  obj-$(CONFIG_DAVINCI_CP_INTC)                += irq-davinci-cp-intc.o
> > -obj-$(CONFIG_ARCH_EXYNOS)            += exynos-combiner.o
> > +obj-$(CONFIG_EXYNOS_IRQ_COMBINER)    += exynos-combiner.o
> >  obj-$(CONFIG_FARADAY_FTINTC010)              += irq-ftintc010.o
> >  obj-$(CONFIG_ARCH_HIP04)             += irq-hip04.o
> >  obj-$(CONFIG_ARCH_LPC32XX)           += irq-lpc32xx.o
> > --
> > 2.17.1
> >