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path: root/drivers/gpio/gpiolib-sysfs.c
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Diffstat (limited to 'drivers/gpio/gpiolib-sysfs.c')
-rw-r--r--drivers/gpio/gpiolib-sysfs.c65
1 files changed, 32 insertions, 33 deletions
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index 12d853845b..6bf5332136 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -165,10 +165,10 @@ static irqreturn_t gpio_sysfs_irq(int irq, void *priv)
/* Caller holds gpiod-data mutex. */
static int gpio_sysfs_request_irq(struct device *dev, unsigned char flags)
{
- struct gpiod_data *data = dev_get_drvdata(dev);
- struct gpio_desc *desc = data->desc;
- unsigned long irq_flags;
- int ret;
+ struct gpiod_data *data = dev_get_drvdata(dev);
+ struct gpio_desc *desc = data->desc;
+ unsigned long irq_flags;
+ int ret;
data->irq = gpiod_to_irq(desc);
if (data->irq < 0)
@@ -259,7 +259,7 @@ static ssize_t edge_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct gpiod_data *data = dev_get_drvdata(dev);
- ssize_t status = size;
+ ssize_t status = size;
int flags;
flags = sysfs_match_string(trigger_names, buf);
@@ -292,10 +292,11 @@ static DEVICE_ATTR_RW(edge);
/* Caller holds gpiod-data mutex. */
static int gpio_sysfs_set_active_low(struct device *dev, int value)
{
- struct gpiod_data *data = dev_get_drvdata(dev);
- struct gpio_desc *desc = data->desc;
- int status = 0;
- unsigned int flags = data->irq_flags;
+ struct gpiod_data *data = dev_get_drvdata(dev);
+ unsigned int flags = data->irq_flags;
+ struct gpio_desc *desc = data->desc;
+ int status = 0;
+
if (!!test_bit(FLAG_ACTIVE_LOW, &desc->flags) == !!value)
return 0;
@@ -331,9 +332,9 @@ static ssize_t active_low_show(struct device *dev,
static ssize_t active_low_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
- struct gpiod_data *data = dev_get_drvdata(dev);
- ssize_t status;
- long value;
+ struct gpiod_data *data = dev_get_drvdata(dev);
+ ssize_t status;
+ long value;
status = kstrtol(buf, 0, &value);
if (status)
@@ -399,7 +400,7 @@ static const struct attribute_group *gpio_groups[] = {
static ssize_t base_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- const struct gpio_chip *chip = dev_get_drvdata(dev);
+ const struct gpio_chip *chip = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n", chip->base);
}
@@ -408,7 +409,7 @@ static DEVICE_ATTR_RO(base);
static ssize_t label_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- const struct gpio_chip *chip = dev_get_drvdata(dev);
+ const struct gpio_chip *chip = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", chip->label ?: "");
}
@@ -417,7 +418,7 @@ static DEVICE_ATTR_RO(label);
static ssize_t ngpio_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- const struct gpio_chip *chip = dev_get_drvdata(dev);
+ const struct gpio_chip *chip = dev_get_drvdata(dev);
return sysfs_emit(buf, "%u\n", chip->ngpio);
}
@@ -441,11 +442,10 @@ static ssize_t export_store(const struct class *class,
const struct class_attribute *attr,
const char *buf, size_t len)
{
- long gpio;
- struct gpio_desc *desc;
- int status;
- struct gpio_chip *gc;
- int offset;
+ struct gpio_desc *desc;
+ struct gpio_chip *gc;
+ int status, offset;
+ long gpio;
status = kstrtol(buf, 0, &gpio);
if (status < 0)
@@ -496,9 +496,9 @@ static ssize_t unexport_store(const struct class *class,
const struct class_attribute *attr,
const char *buf, size_t len)
{
- long gpio;
- struct gpio_desc *desc;
- int status;
+ struct gpio_desc *desc;
+ int status;
+ long gpio;
status = kstrtol(buf, 0, &gpio);
if (status < 0)
@@ -559,14 +559,13 @@ static struct class gpio_class = {
*/
int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
{
- struct gpio_chip *chip;
- struct gpio_device *gdev;
- struct gpiod_data *data;
- unsigned long flags;
- int status;
- const char *ioname = NULL;
- struct device *dev;
- int offset;
+ const char *ioname = NULL;
+ struct gpio_device *gdev;
+ struct gpiod_data *data;
+ struct gpio_chip *chip;
+ unsigned long flags;
+ struct device *dev;
+ int status, offset;
/* can't export until sysfs is available ... */
if (!class_is_registered(&gpio_class)) {
@@ -733,9 +732,9 @@ EXPORT_SYMBOL_GPL(gpiod_unexport);
int gpiochip_sysfs_register(struct gpio_device *gdev)
{
- struct device *dev;
- struct device *parent;
struct gpio_chip *chip = gdev->chip;
+ struct device *parent;
+ struct device *dev;
/*
* Many systems add gpio chips for SOC support very early,