Linux GPIO subsystem development
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From: Nishka Dasgupta <nishkadg.linux@gmail.com>
To: linus.walleij@linaro.org, linux-gpio@vger.kernel.org
Cc: Nishka Dasgupta <nishkadg.linux@gmail.com>
Subject: [PATCH] pinctrl: rk805: Make structures constant
Date: Mon, 19 Aug 2019 13:27:57 +0530	[thread overview]
Message-ID: <20190819075757.1753-1-nishkadg.linux@gmail.com> (raw)

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>
---
 drivers/pinctrl/pinctrl-rk805.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rk805.c b/drivers/pinctrl/pinctrl-rk805.c
index a8459cafd4ea..26adbe9d6d42 100644
--- 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,
-- 
2.19.1


             reply	other threads:[~2019-08-19  7:58 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-19  7:57 Nishka Dasgupta [this message]
2019-08-20 10:28 ` [PATCH] pinctrl: rk805: Make structures constant Linus Walleij

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