Subject: Re: [PATCH] i2c: pca954x: Fix compilation without CONFIG_GPIOLIB

From: Jingoo Han <[email-masked]>
Date: Thu, 05 Jun 2014 10:57:41 +0900

On Thursday, June 05, 2014 1:57 AM, Laurent Pinchart write/l
> 
> The pca954x driver recently switched to the GPIO descriptor API without
> including the correct <linux/gpio/consumer.h> header. This breaks
> compilation without CONFIG_GPIOLIB.
> 
> drivers/i2c/muxes/i2c-mux-pca954x.c: In function ‘pca954x_probe’:
> drivers/i2c/muxes/i2c-mux-pca954x.c:204:2: error: implicit declaration
> of function ‘devm_gpiod_get’ [-Werror=implicit-function-declaration]
>   gpio = devm_gpiod_get(&client->dev, "reset");
>   ^
> drivers/i2c/muxes/i2c-mux-pca954x.c:204:7: warning: assignment makes
> pointer from integer without a cast [enabled by default]
>   gpio = devm_gpiod_get(&client->dev, "reset");
>        ^
> drivers/i2c/muxes/i2c-mux-pca954x.c:206:3: error: implicit declaration
> of function ‘gpiod_direction_output’
> [-Werror=implicit-function-declaration]
>    gpiod_direction_output(gpio, 0);
>    ^
> cc1: some warnings being treated as errors
> make[3]: *** [drivers/i2c/muxes/i2c-mux-pca954x.o] Error 1
> 
> Fix it by including the right header.
> 
> Reported-by: Jim Davis <[email-masked]>
> Signed-off-by: Laurent Pinchart <[email-masked]>

Reviewed-by: Jingoo Han <[email-masked]>

Best regards,
Jingoo Han

> ---
>  drivers/i2c/muxes/i2c-mux-pca954x.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
> index c2c443f..9bd4212 100644
> --- a/drivers/i2c/muxes/i2c-mux-pca954x.c
> +++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
> @@ -36,12 +36,11 @@
>   */
> 
>  #include <linux/device.h>
> -#include <linux/gpio.h>
> +#include <linux/gpio/consumer.h>
>  #include <linux/i2c.h>
>  #include <linux/i2c-mux.h>
>  #include <linux/i2c/pca954x.h>
>  #include <linux/module.h>
> -#include <linux/of_gpio.h>
>  #include <linux/slab.h>
> 
>  #define PCA954X_MAX_NCHANS 8
> --
> Regards,
> 
> Laurent Pinchart