linux-kernel - Re: [PATCH] thermal: Drop obsolete dependency on COMPILE

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Message-ID: <CAJZ5v0idi1+Rzgqgr0H3_d_SB6B41hoZ0TJ2h8j8iK9FQPNGbw@mail.gmail.com>
Date:   Wed, 3 Aug 2022 19:05:39 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Jean Delvare <jdelvare@...e.de>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Talel Shenhar <talel@...zon.com>,
        Neil Armstrong <narmstrong@...libre.com>
Subject: Re: [PATCH] thermal: Drop obsolete dependency on COMPILE_TEST

On Sun, Jul 31, 2022 at 2:13 PM Jean Delvare <jdelvare@...e.de> wrote:
>
> Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it
> is possible to test-build any driver which depends on OF on any
> architecture by explicitly selecting OF. Therefore depending on
> COMPILE_TEST as an alternative is no longer needed.
>
> It is actually better to always build such drivers with OF enabled,
> so that the test builds are closer to how each driver will actually be
> built on its intended target. Building them without OF may not test
> much as the compiler will optimize out potentially large parts of the
> code. In the worst case, this could even pop false positive warnings.
> Dropping COMPILE_TEST here improves the quality of our testing and
> avoids wasting time on non-existent issues.
>
> Signed-off-by: Jean Delvare <jdelvare@...e.de>
> Cc: Talel Shenhar <talel@...zon.com>
> Cc: Neil Armstrong <narmstrong@...libre.com>
> Cc: "Rafael J. Wysocki" <rafael@...nel.org>
> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>

Daniel, I can pick up this one if that's OK.  Any concerns?

> ---
>  drivers/thermal/Kconfig |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> --- linux-5.18.orig/drivers/thermal/Kconfig     2022-05-22 21:52:31.000000000 +0200
> +++ linux-5.18/drivers/thermal/Kconfig  2022-07-31 13:51:55.009394318 +0200
> @@ -221,7 +221,7 @@ config THERMAL_EMULATION
>
>  config THERMAL_MMIO
>         tristate "Generic Thermal MMIO driver"
> -       depends on OF || COMPILE_TEST
> +       depends on OF
>         depends on HAS_IOMEM
>         help
>           This option enables the generic thermal MMIO driver that will use
> @@ -496,7 +496,7 @@ config SPRD_THERMAL
>
>  config KHADAS_MCU_FAN_THERMAL
>         tristate "Khadas MCU controller FAN cooling support"
> -       depends on OF || COMPILE_TEST
> +       depends on OF
>         depends on MFD_KHADAS_MCU
>         select MFD_CORE
>         select REGMAP
>
> --
> Jean Delvare
> SUSE L3 Support