linux-kernel - Re: linux-next: build failure after merge of the gpio-brgl-fixes tree

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Message-ID: <AM6PR08MB43769CCE04DA7C624CA3028AFFC99@AM6PR08MB4376.eurprd08.prod.outlook.com>
Date:   Tue, 24 Jan 2023 00:51:48 +0000
From:   Pierluigi Passaro <pierluigi.p@...iscite.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Bartosz Golaszewski <brgl@...ev.pl>
CC:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the gpio-brgl-fixes tree

On 1/23/23 21:56, Stephen Rothwell wrote:
> Hi all,
>
> After merging the gpio-brgl-fixes tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
>
> In file included from include/linux/of_gpio.h:14,
>                  from drivers/net/phy/mdio_bus.c:27:
> include/linux/gpio/driver.h:782:68: error: parameter 4 ('lflags') has incomplete type
>   782 |                                             enum gpio_lookup_flags lflags,
>       |                                             ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
> include/linux/gpio/driver.h:779:33: error: function declaration isn't a prototype [-Werror=strict-prototypes]
>   779 | static inline struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
>       |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
>
> Caused by commit
>
>   de5f701724ac ("gpiolib: fix linker errors when GPIOLIB is disabled")
>
> I have used the gpio-brgl-fixes tree from next-20210123 for today.
>
> --
> Cheers,
> Stephen Rothwell
>
Hi Stephen,
please provide detailed build instructions.
Building with
- commit id de5f701724ac
- defconfig arch/powerpc/configs/ppc64_defconfig
- powerpc64-linux-gnu-gcc version 11.3.0 (Ubuntu 11.3.0-1ubuntu1~22.04)
The build fails almost immediately as follow
arch/powerpc/kernel/trace/ftrace.c:839:7: error: no previous prototype for ‘arch_ftrace_match_adjust’ [-Werror=missing-prototypes]
  839 | char *arch_ftrace_match_adjust(char *str, const char *search)
      |       ^~~~~~~~~~~~~~~~~~~~~~~~
However, the same happens rolling back de5f701724ac.
Thanks
Pier