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    Subject[PATCH 1/3] gpiolib: make names array and its values const
    Date
    gpiolib doesn't need to modify the names and I assume most initializers
    use sting constants that shouldn't be modified anyhow.

    Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
    Cc: Kevin Wells <kevin.wells@nxp.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 a25ad28..8543685 100644
    --- a/drivers/gpio/gpiolib.c
    +++ b/drivers/gpio/gpiolib.c
    @@ -716,7 +716,7 @@ 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 6a2fb3f..4faeca4 100644
    --- a/drivers/gpio/pca953x.c
    +++ b/drivers/gpio/pca953x.c
    @@ -56,7 +56,7 @@ 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 485eeb6..37af893 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 81736d6..4630fab 100644
    --- a/include/linux/i2c/pca953x.h
    +++ b/include/linux/i2c/pca953x.h
    @@ -15,5 +15,5 @@ struct pca953x_platform_data {
    int (*teardown)(struct i2c_client *client,
    unsigned gpio, unsigned ngpio,
    void *context);
    - char **names;
    + const char *const *names;
    };
    --
    1.6.6
    --
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