diff options
Diffstat (limited to 'drivers/gpio/gpiolib-sysfs.c')
| -rw-r--r-- | drivers/gpio/gpiolib-sysfs.c | 65 |
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, |