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Message-ID: <CAMRc=MfXDeV7gus97Ba4FeuaP4sKtF87DrV4gCbiBR+rGFY6XA@mail.gmail.com>
Date: Mon, 23 Jan 2023 16:10:46 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Pierluigi Passaro <pierluigi.p@...iscite.com>
Cc: linus.walleij@...aro.org, yamada.masahiro@...ionext.com,
linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
eran.m@...iscite.com, nate.d@...iscite.com,
francesco.f@...iscite.com, pierluigi.passaro@...il.com,
kernel test robot <lkp@...el.com>
Subject: Re: [PATCH v2] gpiolib: fix linker errors when GPIOLIB is disabled
On Sat, Jan 21, 2023 at 1:19 AM Pierluigi Passaro
<pierluigi.p@...iscite.com> wrote:
>
> Both the functions gpiochip_request_own_desc and
> gpiochip_free_own_desc are exported from
> drivers/gpio/gpiolib.c
> but this file is compiled only when CONFIG_GPIOLIB is enabled.
> Move the protototypes under "#ifdef CONFIG_GPIOLIB" and provide
> reasonable definitions in the "#else" branch.
>
> Fixes: 9091373ab7ea ("gpio: remove less important #ifdef around declarations")
> Signed-off-by: Pierluigi Passaro <pierluigi.p@...iscite.com>
> Reported-by: kernel test robot <lkp@...el.com>
> ---
Applied, thanks. In the future please list changes between patch
versions when submitting new iterations.
Bart
> include/linux/gpio/driver.h | 20 ++++++++++++++++++--
> 1 file changed, 18 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
> index 44783fc16125..ed77c6fc0beb 100644
> --- a/include/linux/gpio/driver.h
> +++ b/include/linux/gpio/driver.h
> @@ -758,6 +758,8 @@ gpiochip_remove_pin_ranges(struct gpio_chip *gc)
>
> #endif /* CONFIG_PINCTRL */
>
> +#ifdef CONFIG_GPIOLIB
> +
> struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
> unsigned int hwnum,
> const char *label,
> @@ -765,8 +767,6 @@ struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
> enum gpiod_flags dflags);
> void gpiochip_free_own_desc(struct gpio_desc *desc);
>
> -#ifdef CONFIG_GPIOLIB
> -
> /* lock/unlock as IRQ */
> int gpiochip_lock_as_irq(struct gpio_chip *gc, unsigned int offset);
> void gpiochip_unlock_as_irq(struct gpio_chip *gc, unsigned int offset);
> @@ -776,6 +776,22 @@ struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc);
>
> #else /* CONFIG_GPIOLIB */
>
> +static inline struct gpio_desc *gpiochip_request_own_desc(struct gpio_chip *gc,
> + unsigned int hwnum,
> + const char *label,
> + enum gpio_lookup_flags lflags,
> + enum gpiod_flags dflags)
> +{
> + /* GPIO can never have been requested */
> + WARN_ON(1);
> + return ERR_PTR(-ENODEV);
> +}
> +
> +static inline void gpiochip_free_own_desc(struct gpio_desc *desc)
> +{
> + WARN_ON(1);
> +}
> +
> static inline struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc)
> {
> /* GPIO can never have been requested */
> --
> 2.37.2
>
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