linux-kernel - [PATCH 1/3] gpiolib: make names array and its values const

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Date:	Tue, 23 Mar 2010 11:24:53 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Kevin Wells <kevin.wells@....com>
Subject: [PATCH 1/3] gpiolib: make names array and its values const

gpiolib doesn't need to modify the names and I assume most initializers
use string constants that shouldn't be modified anyhow.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Kevin Wells <kevin.wells@....com>
---
 drivers/gpio/gpiolib.c      |    2 +-
 drivers/gpio/pca953x.c      |    2 +-
 include/asm-generic/gpio.h  |    2 +-
 include/linux/i2c/pca953x.h |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6d1b866..03e82d5 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -720,7 +720,7 @@ int gpio_export(unsigned gpio, bool direction_may_change)
 	unsigned long		flags;
 	struct gpio_desc	*desc;
 	int			status = -EINVAL;
-	char			*ioname = NULL;
+	const char		*ioname = NULL;
 
 	/* can't export until sysfs is available ... */
 	if (!gpio_class.p) {
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index ab5daab..60553d0 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -72,7 +72,7 @@ struct pca953x_chip {
 	struct i2c_client *client;
 	struct pca953x_platform_data *dyn_pdata;
 	struct gpio_chip gpio_chip;
-	char **names;
+	const char *const *names;
 };
 
 static int pca953x_write_reg(struct pca953x_chip *chip, int reg, uint16_t val)
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 979c6a5..bc0c14d 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -98,7 +98,7 @@ struct gpio_chip {
 						struct gpio_chip *chip);
 	int			base;
 	u16			ngpio;
-	char			**names;
+	const char		*const *names;
 	unsigned		can_sleep:1;
 	unsigned		exported:1;
 };
diff --git a/include/linux/i2c/pca953x.h b/include/linux/i2c/pca953x.h
index d5c5a60..139ba52 100644
--- a/include/linux/i2c/pca953x.h
+++ b/include/linux/i2c/pca953x.h
@@ -24,7 +24,7 @@ struct pca953x_platform_data {
 	int		(*teardown)(struct i2c_client *client,
 				unsigned gpio, unsigned ngpio,
 				void *context);
-	char		**names;
+	const char	*const *names;
 };
 
 #endif /* _LINUX_PCA953X_H */
-- 
1.7.0

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