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From: Arnd Bergmann <arnd@arndb.de>
To: Amit Kucheria <amit.kucheria@linaro.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	arm-soc <arm@kernel.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Kishon Vijay Abraham I <kishon@ti.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Mark Brown <broonie@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Sebastian Reichel <sre@kernel.org>,
	Stephen Boyd <sboyd@kernel.org>, Will Deacon <will@kernel.org>,
	linux-clk <linux-clk@vger.kernel.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	linux-pci <linux-pci@vger.kernel.org>,
	Linux PM list <linux-pm@vger.kernel.org>
Subject: Re: [PATCH 0/4] Cleanup arm64 driver dependencies
Date: Thu, 12 Sep 2019 11:29:00 +0200
Message-ID: <CAK8P3a2zGJx7SCA4LUHPGTybN8GU16Ah3H0FbaOEwR3H7uGCnA@mail.gmail.com> (raw)
In-Reply-To: <cover.1568239378.git.amit.kucheria@linaro.org>

On Thu, Sep 12, 2019 at 12:18 AM Amit Kucheria <amit.kucheria@linaro.org> wrote:
>
> I was using initcall_debugging on a QCOM platform and ran across a bunch of
> driver initcalls that are enabled even if their SoC support is disabled.
>
> Here are some fixups for a subset of them.

The idea seems reasonable, disabling a platform may just turn off
all the drivers that are not useful elsewhere, but there are mistakes
in a lot of your changes, so I'm certainly not applying these for 5.4.

Generally speaking, the way that works best is

config SUBSYS_DRIVER_FOO
       tristate "SUBSYS support for FOO platform"
       depends on ARCH_FOO || COMPILE_TEST
       depends on SUBSYS
       default "m" if ARCH_FOO

This means it's enabled as a loadable module by default (use
default "y" instead where necessary) as long as the platform
is enabled, but an x86 allmodconfig build also includes it
because of COMPILE_TEST, while any configuration without
ARCH_FOO that is not compile-testing cannot enable it.

       Arnd

  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-11 22:18 Amit Kucheria
2019-09-11 22:18 ` [PATCH 1/4] arm64: Kconfig: Fix XGENE " Amit Kucheria
2019-09-12  1:03   ` Stephen Boyd
2019-09-12  9:23   ` Arnd Bergmann
2019-09-11 22:18 ` [PATCH 3/4] arm64: Kconfig: Fix VEXPRESS " Amit Kucheria
2019-09-12  9:17   ` Arnd Bergmann
2019-09-13 10:12   ` Sudeep Holla
2019-09-20 20:12     ` Amit Kucheria
2019-09-11 22:18 ` [PATCH 4/4] arm64: Kconfig: Fix EXYNOS " Amit Kucheria
2019-09-12  9:19   ` Arnd Bergmann
2019-09-12  9:32   ` Mark Brown
2019-09-12  9:29 ` Arnd Bergmann [this message]
2019-09-12  9:47   ` [PATCH 0/4] Cleanup arm64 " Amit Kucheria
2019-09-12 10:03   ` Mark Brown
2019-09-12  9:46 ` Mark Brown
2019-09-12 10:03   ` Amit Kucheria
2019-09-12 10:53     ` Mark Brown

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