linux-kernel - Re: [PATCH] gpio: tegra: don't auto-enable for COMPILE

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Message-ID: <CACRpkda95YM2ZA2_w-peq-gDvSs6KLggn_ZbLXGWxVEY+HM7Ow@mail.gmail.com>
Date:	Wed, 6 Jul 2016 15:38:20 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Alexandre Courbot <gnurou@...il.com>,
	Alexander Stein <alexanders83@....de>,
	William Breathitt Gray <vilhelm.gray@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: tegra: don't auto-enable for COMPILE_TEST

On Wed, Jul 6, 2016 at 2:54 PM, Arnd Bergmann <arnd@...db.de> wrote:

> I stumbled over a build error with COMPILE_TEST and CONFIG_OF
> disabled:
>
> drivers/gpio/gpio-tegra.c: In function 'tegra_gpio_probe':
> drivers/gpio/gpio-tegra.c:603:9: error: 'struct gpio_chip' has no member named 'of_node'
>
> The problem is that the newly added GPIO_TEGRA Kconfig symbol
> does not have a dependency on CONFIG_OF. However, there is another
> problem here as the driver gets enabled unconditionally whenever
> COMPILE_TEST is set.
>
> This fixes both problems, by making the symbol user-visible
> when COMPILE_TEST is set and default-enabled for ARCH_TEGRA=y.
>
> As a side-effect, it is now possible to compile-test a Tegra
> kernel with GPIO support disabled, which is harmless.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 4dd4dd1d2120 ("gpio: tegra: Allow compile test")

Patch applied.

I'm starting to get a bit tired about anything related to compile testing.

It's not like I don't understand that it is good to test-build things ...

It's just that enabling this turns up so many strange compile bugs to
the left and right that it takes focus away from core development.
I don't know what can be done to alleviate the situation.

Yours,
Linus Walleij