linux-kernel - Re: [PATCH] gpio: Move gpiochip_lock/unlock_as

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Date:   Fri, 23 Aug 2019 12:00:26 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Alexandre Courbot <acourbot@...dia.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH] gpio: Move gpiochip_lock/unlock_as_irq to gpio/driver.h

On Thu, Aug 22, 2019 at 5:19 AM YueHaibing <yuehaibing@...wei.com> wrote:

> If CONFIG_GPIOLIB is not, gpiochip_lock/unlock_as_irq will
> conflict as this:
>
> In file included from sound/soc/codecs/wm5100.c:18:0:
> ./include/linux/gpio.h:224:19: error: static declaration of gpiochip_lock_as_irq follows non-static declaration
>  static inline int gpiochip_lock_as_irq(struct gpio_chip *chip,
>                    ^~~~~~~~~~~~~~~~~~~~
> In file included from sound/soc/codecs/wm5100.c:17:0:
> ./include/linux/gpio/driver.h:494:5: note: previous declaration of gpiochip_lock_as_irq was here
>  int gpiochip_lock_as_irq(struct gpio_chip *chip, unsigned int offset);
>      ^~~~~~~~~~~~~~~~~~~~
> In file included from sound/soc/codecs/wm5100.c:18:0:
> ./include/linux/gpio.h:231:20: error: static declaration of gpiochip_unlock_as_irq follows non-static declaration
>  static inline void gpiochip_unlock_as_irq(struct gpio_chip *chip,
>                     ^~~~~~~~~~~~~~~~~~~~~~
> In file included from sound/soc/codecs/wm5100.c:17:0:
> ./include/linux/gpio/driver.h:495:6: note: previous declaration of gpiochip_unlock_as_irq was here
>  void gpiochip_unlock_as_irq(struct gpio_chip *chip, unsigned int offset);
>      ^~~~~~~~~~~~~~~~~~~~~~
>
> Move them to gpio/driver.h and use CONFIG_GPIOLIB guard this.
>
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: d74be6dfea1b ("gpio: remove gpiod_lock/unlock_as_irq()")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Patch applied with some fuzzing.

Yours,
Linus Walleij