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authorJohan Hovold <johan@kernel.org>2015-05-04 17:10:47 +0200
committerLinus Walleij <linus.walleij@linaro.org>2015-05-12 10:47:52 +0200
commit427fdeef5014c77aea7ca10c104d534786c3c1e0 (patch)
treedc7ac195615a9c7bd5b469bdb2fe522384fc2646 /drivers/gpio
parent2f323b85675d89c85e72bec191d42b72d905a652 (diff)
downloadop-kernel-dev-427fdeef5014c77aea7ca10c104d534786c3c1e0.zip
op-kernel-dev-427fdeef5014c77aea7ca10c104d534786c3c1e0.tar.gz
gpio: sysfs: remove FLAG_SYSFS_DIR
Remove FLAG_SYSFS_DIR, which is sysfs-interface specific, and store it in the class-device data instead. Note that the flag is only used during export. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib-sysfs.c15
-rw-r--r--drivers/gpio/gpiolib.h1
2 files changed, 7 insertions, 9 deletions
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c
index 06372c7..9047b2d 100644
--- a/drivers/gpio/gpiolib-sysfs.c
+++ b/drivers/gpio/gpiolib-sysfs.c
@@ -16,6 +16,8 @@ struct gpiod_data {
struct mutex mutex;
struct kernfs_node *value_kn;
int irq;
+
+ bool direction_can_change;
};
/*
@@ -354,7 +356,7 @@ static umode_t gpio_is_visible(struct kobject *kobj, struct attribute *attr,
struct gpiod_data *data = dev_get_drvdata(dev);
struct gpio_desc *desc = data->desc;
umode_t mode = attr->mode;
- bool show_direction = test_bit(FLAG_SYSFS_DIR, &desc->flags);
+ bool show_direction = data->direction_can_change;
if (attr == &dev_attr_direction.attr) {
if (!show_direction)
@@ -583,12 +585,6 @@ int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
status = -EPERM;
goto err_unlock;
}
-
- if (chip->direction_input && chip->direction_output &&
- direction_may_change) {
- set_bit(FLAG_SYSFS_DIR, &desc->flags);
- }
-
spin_unlock_irqrestore(&gpio_lock, flags);
data = kzalloc(sizeof(*data), GFP_KERNEL);
@@ -599,6 +595,10 @@ int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
data->desc = desc;
mutex_init(&data->mutex);
+ if (chip->direction_input && chip->direction_output)
+ data->direction_can_change = direction_may_change;
+ else
+ data->direction_can_change = false;
offset = gpio_chip_hwgpio(desc);
if (chip->names && chip->names[offset])
@@ -693,7 +693,6 @@ void gpiod_unexport(struct gpio_desc *desc)
data = dev_get_drvdata(dev);
- clear_bit(FLAG_SYSFS_DIR, &desc->flags);
clear_bit(FLAG_EXPORT, &desc->flags);
device_unregister(dev);
diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h
index 5c4f270..479041f 100644
--- a/drivers/gpio/gpiolib.h
+++ b/drivers/gpio/gpiolib.h
@@ -89,7 +89,6 @@ struct gpio_desc {
#define FLAG_OPEN_DRAIN 7 /* Gpio is open drain type */
#define FLAG_OPEN_SOURCE 8 /* Gpio is open source type */
#define FLAG_USED_AS_IRQ 9 /* GPIO is connected to an IRQ */
-#define FLAG_SYSFS_DIR 10 /* show sysfs direction attribute */
#define FLAG_IS_HOGGED 11 /* GPIO is hogged */
#define GPIO_TRIGGER_MASK (BIT(FLAG_TRIG_FALL) | BIT(FLAG_TRIG_RISE))
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