linux-kernel - Re: [PATCH] hte: tegra194: add GPIOLIB dependency

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Message-ID: <CAMRc=Mc-G2DMcvBGpxZbEjgX9GZDTNLmpMJix+-AC23nKqPCpQ@mail.gmail.com>
Date:   Mon, 23 Oct 2023 20:20:46 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Dipen Patel <dipenp@...dia.com>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd@...db.de>, timestamp@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hte: tegra194: add GPIOLIB dependency

On Mon, Oct 23, 2023 at 7:26 PM Dipen Patel <dipenp@...dia.com> wrote:
>
> On 10/23/23 5:02 AM, Bartosz Golaszewski wrote:
> > On Mon, Oct 23, 2023 at 2:00 PM Bartosz Golaszewski <brgl@...ev.pl> wrote:
> >>
> >> On Mon, Oct 23, 2023 at 1:57 PM Arnd Bergmann <arnd@...nel.org> wrote:
> >>>
> >>> From: Arnd Bergmann <arnd@...db.de>
> >>>
> >>> The driver started calling into a few interfaces that are part of GPIOLIB and
> >>> don't have stub implementations otherwise:
> >>>
> >>> drivers/hte/hte-tegra194.c: In function 'tegra_hte_line_xlate':
> >>> drivers/hte/hte-tegra194.c:424:48: error: implicit declaration of function 'gpio_device_get_base'; did you mean 'gpio_device_get_desc'? [-Werror=implicit-function-declaration]
> >>>   424 |                 line_id = desc->attr.line_id - gpio_device_get_base(gs->gdev);
> >>>       |                                                ^~~~~~~~~~~~~~~~~~~~
> >>>       |                                                gpio_device_get_desc
> >>>
> >>> Add a Kconfig dependency to only allow building when this is defined.
> >>>
> >>> Fixes: dc850faa28ee0 ("hte: tegra194: don't access struct gpio_chip")
> >>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> >>> ---
> >>>  drivers/hte/Kconfig | 1 +
> >>>  1 file changed, 1 insertion(+)
> >>>
> >>> diff --git a/drivers/hte/Kconfig b/drivers/hte/Kconfig
> >>> index 083e67492bf2e..641af722b555d 100644
> >>> --- a/drivers/hte/Kconfig
> >>> +++ b/drivers/hte/Kconfig
> >>> @@ -17,6 +17,7 @@ if HTE
> >>>  config HTE_TEGRA194
> >>>         tristate "NVIDIA Tegra194 HTE Support"
> >>>         depends on (ARCH_TEGRA_194_SOC || COMPILE_TEST)
> >>> +       depends on GPIOLIB
> >>>         help
> >>>           Enable this option for integrated hardware timestamping engine also
> >>>           known as generic timestamping engine (GTE) support on NVIDIA Tegra194
> >>> --
> >>> 2.39.2
> >>>
> >>
> >> Thanks. None of the new interfaces are "consumer" APIs and are not
> >> meant to have stubs so depending on GPIOLIB is correct here.
> >>
> >> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > Ah, this goes on top of the patch that is in my tree so I'll wait for
> > Dipen's Ack and apply it.
>
> Acked-by: Dipen Patel <dipenp@...dia.com>
> >
> > Bart
>

I queued it. There's a trivial conflict with your HTE branch, Stephen
should be able to resolve it.

Bart