pinctrl: stm32: constify gpio_chip structures

These structures are only used to copy into other structures, so declare
them as const.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct gpio_chip i@p = { ... };

@ok@
identifier r.i;
expression e;
position p;
@@
e = i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct gpio_chip e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct gpio_chip i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 4f01025a09416ca4f27e8e749c9ea68cce9e116c..200667f08c373eb027f2bcc4253f564563586e96 100644 (file)
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -197,7 +197,7 @@ static int stm32_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
        return irq_create_fwspec_mapping(&fwspec);
 }
 
-static struct gpio_chip stm32_gpio_template = {
+static const struct gpio_chip stm32_gpio_template = {
        .request                = stm32_gpio_request,
        .free                   = stm32_gpio_free,
        .get                    = stm32_gpio_get,