linux-kernel - [PATCH] i2c: pca954x: Fix compilation without CONFIG

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Message-Id: <1401900992-16581-1-git-send-email-laurent.pinchart@ideasonboard.com>
Date:	Wed,  4 Jun 2014 18:56:32 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	linux-i2c@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	wsa@...-dreams.de, khali@...ux-fr.org, linus.walleij@...aro.org,
	paul.gortmaker@...driver.com, jg1.han@...sung.com,
	laurent.pinchart@...asonboard.com,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Jim Davis <jim.epost@...il.com>
Subject: [PATCH] i2c: pca954x: Fix compilation without CONFIG_GPIOLIB

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 <jim.epost@...il.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
 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

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