pinctrl: rk805: Make structures constant

Static structures rk805_pinctrl_desc and rk805_gpio_chip, of types
gpio_chip and pinctrl_desc respectively, are not used except to be
copied into the fields of a different variable. Hence make
rk805_pinctrl_desc and rk805_gpio_chip both constant to protect them
from unintended modification.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190819075757.1753-1-nishkadg.linux@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-rk805.c b/drivers/pinctrl/pinctrl-rk805.c
index a8459ca..26adbe9 100644 (file)
--- a/drivers/pinctrl/pinctrl-rk805.c
+++ b/drivers/pinctrl/pinctrl-rk805.c
@@ -197,7 +197,7 @@ static int rk805_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
        return !(val & pci->pin_cfg[offset].dir_msk);
 }
 
-static struct gpio_chip rk805_gpio_chip = {
+static const struct gpio_chip rk805_gpio_chip = {
        .label                  = "rk805-gpio",
        .request                = gpiochip_generic_request,
        .free                   = gpiochip_generic_free,
@@ -404,7 +404,7 @@ static const struct pinconf_ops rk805_pinconf_ops = {
        .pin_config_set = rk805_pinconf_set,
 };
 
-static struct pinctrl_desc rk805_pinctrl_desc = {
+static const struct pinctrl_desc rk805_pinctrl_desc = {
        .name = "rk805-pinctrl",
        .pctlops = &rk805_pinctrl_ops,
        .pmxops = &rk805_pinmux_ops,