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path: root/drivers/gpio/devres.c
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Diffstat (limited to 'drivers/gpio/devres.c')
-rw-r--r--drivers/gpio/devres.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c
index 3dd29399cef5..9e9947cb86a3 100644
--- a/drivers/gpio/devres.c
+++ b/drivers/gpio/devres.c
@@ -71,6 +71,35 @@ int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
EXPORT_SYMBOL(devm_gpio_request);
/**
+ * devm_gpio_request_one - request a single GPIO with initial setup
+ * @dev: device to request for
+ * @gpio: the GPIO number
+ * @flags: GPIO configuration as specified by GPIOF_*
+ * @label: a literal description string of this GPIO
+ */
+int devm_gpio_request_one(struct device *dev, unsigned gpio,
+ unsigned long flags, const char *label)
+{
+ unsigned *dr;
+ int rc;
+
+ dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
+ if (!dr)
+ return -ENOMEM;
+
+ rc = gpio_request_one(gpio, flags, label);
+ if (rc) {
+ devres_free(dr);
+ return rc;
+ }
+
+ *dr = gpio;
+ devres_add(dev, dr);
+
+ return 0;
+}
+
+/**
* devm_gpio_free - free an interrupt
* @dev: device to free gpio for
* @gpio: gpio to free
@@ -83,8 +112,7 @@ EXPORT_SYMBOL(devm_gpio_request);
void devm_gpio_free(struct device *dev, unsigned int gpio)
{
- WARN_ON(devres_destroy(dev, devm_gpio_release, devm_gpio_match,
+ WARN_ON(devres_release(dev, devm_gpio_release, devm_gpio_match,
&gpio));
- gpio_free(gpio);
}
EXPORT_SYMBOL(devm_gpio_free);