linux-kernel - Re: [PATCH] Staging: iio: adt7316: use correct headers for gpio

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Date:   Mon, 17 Jun 2019 20:13:51 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Lars-Peter Clausen <lars@...afoo.de>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shreeya Patel <shreeya.patel23498@...il.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Jeremy Fertic <jeremyfertic@...il.com>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: iio: adt7316: use correct headers for gpio

On Mon, 17 Jun 2019 13:09:20 +0200
Arnd Bergmann <arnd@...db.de> wrote:

> When building without CONFIG_GPIOLIB, we get a compile-time failure:
> 
> drivers/staging/iio/addac/adt7316.c:947:3: error: implicit declaration of function 'gpiod_set_value' [-Werror,-Wimplicit-function-declaration]
>                 gpiod_set_value(chip->ldac_pin, 0);
>                 ^
> drivers/staging/iio/addac/adt7316.c:947:3: note: did you mean 'gpio_set_value'?
> include/linux/gpio.h:169:20: note: 'gpio_set_value' declared here
> static inline void gpio_set_value(unsigned gpio, int value)
>                    ^
> drivers/staging/iio/addac/adt7316.c:947:3: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
>                 gpiod_set_value(chip->ldac_pin, 0);
>                 ^
> drivers/staging/iio/addac/adt7316.c:1805:13: error: implicit declaration of function 'irqd_get_trigger_type' [-Werror,-Wimplicit-function-declaration]
>         irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq));
> 
> Include the correct headers that contain the declarations for these
> functions.
> 
> Fixes: c63460c4298f ("Staging: iio: adt7316: Use device tree data to set ldac_pin")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Sorry, this is me being exceedingly slow on getting the fix upstream.

I've just sent a pull request for the fix I've had queued up for a few weeks.

Jonathan
> ---
>  drivers/staging/iio/addac/adt7316.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
> index 37ce563cb0e1..9cb3d0e42c38 100644
> --- a/drivers/staging/iio/addac/adt7316.c
> +++ b/drivers/staging/iio/addac/adt7316.c
> @@ -6,7 +6,8 @@
>   */
>  
>  #include <linux/interrupt.h>
> -#include <linux/gpio.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/irq.h>
>  #include <linux/workqueue.h>
>  #include <linux/device.h>
>  #include <linux/kernel.h>