Input: gpio_keys - constify platform data
The platform data should not be altered and therefore should be
accessed through const pointers.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index ed1ed46..19887fc 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -30,7 +30,7 @@
#include <linux/of_gpio.h>
struct gpio_button_data {
- struct gpio_keys_button *button;
+ const struct gpio_keys_button *button;
struct input_dev *input;
struct timer_list timer;
struct work_struct work;
@@ -322,7 +322,7 @@
static void gpio_keys_report_event(struct gpio_button_data *bdata)
{
- struct gpio_keys_button *button = bdata->button;
+ const struct gpio_keys_button *button = bdata->button;
struct input_dev *input = bdata->input;
unsigned int type = button->type ?: EV_KEY;
int state = (gpio_get_value_cansleep(button->gpio) ? 1 : 0) ^ button->active_low;
@@ -354,7 +354,7 @@
static irqreturn_t gpio_keys_isr(int irq, void *dev_id)
{
struct gpio_button_data *bdata = dev_id;
- struct gpio_keys_button *button = bdata->button;
+ const struct gpio_keys_button *button = bdata->button;
BUG_ON(irq != gpio_to_irq(button->gpio));
@@ -368,8 +368,9 @@
}
static int __devinit gpio_keys_setup_key(struct platform_device *pdev,
+ struct input_dev *input,
struct gpio_button_data *bdata,
- struct gpio_keys_button *button)
+ const struct gpio_keys_button *button)
{
const char *desc = button->desc ? button->desc : "gpio_keys";
struct device *dev = &pdev->dev;
@@ -378,6 +379,8 @@
setup_timer(&bdata->timer, gpio_keys_timer, (unsigned long)bdata);
INIT_WORK(&bdata->work, gpio_keys_work_func);
+ bdata->input = input;
+ bdata->button = button;
error = gpio_request(button->gpio, desc);
if (error < 0) {
@@ -425,6 +428,7 @@
goto fail3;
}
+ input_set_capability(input, button->type ?: EV_KEY, button->code);
return 0;
fail3:
@@ -549,7 +553,7 @@
static int __devinit gpio_keys_probe(struct platform_device *pdev)
{
- struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
+ const struct gpio_keys_platform_data *pdata = pdev->dev.platform_data;
struct gpio_keys_drvdata *ddata;
struct device *dev = &pdev->dev;
struct gpio_keys_platform_data alt_pdata;
@@ -599,21 +603,15 @@
__set_bit(EV_REP, input->evbit);
for (i = 0; i < pdata->nbuttons; i++) {
- struct gpio_keys_button *button = &pdata->buttons[i];
+ const struct gpio_keys_button *button = &pdata->buttons[i];
struct gpio_button_data *bdata = &ddata->data[i];
- unsigned int type = button->type ?: EV_KEY;
- bdata->input = input;
- bdata->button = button;
-
- error = gpio_keys_setup_key(pdev, bdata, button);
+ error = gpio_keys_setup_key(pdev, input, bdata, button);
if (error)
goto fail2;
if (button->wakeup)
wakeup = 1;
-
- input_set_capability(input, type, button->code);
}
error = sysfs_create_group(&pdev->dev.kobj, &gpio_keys_attr_group);
@@ -699,11 +697,12 @@
static int gpio_keys_suspend(struct device *dev)
{
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
+ const struct gpio_keys_button *button;
int i;
if (device_may_wakeup(dev)) {
for (i = 0; i < ddata->n_buttons; i++) {
- struct gpio_keys_button *button = ddata->data[i].button;
+ button = ddata->data[i].button;
if (button->wakeup) {
int irq = gpio_to_irq(button->gpio);
enable_irq_wake(irq);
@@ -717,11 +716,11 @@
static int gpio_keys_resume(struct device *dev)
{
struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
+ const struct gpio_keys_button *button;
int i;
for (i = 0; i < ddata->n_buttons; i++) {
-
- struct gpio_keys_button *button = ddata->data[i].button;
+ button = ddata->data[i].button;
if (button->wakeup && device_may_wakeup(dev)) {
int irq = gpio_to_irq(button->gpio);
disable_irq_wake(irq);