1 files changed, 54 insertions, 19 deletions

diff --git a/drivers/gpio/gpiolib-legacy.c b/drivers/gpio/gpiolib-legacy.c
index 5a9911ae9125..ef3f2ef30cf2 100644
--- a/drivers/gpio/gpiolib-legacy.c
+++ b/drivers/gpio/gpiolib-legacy.c
@@ -1,4 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <linux/bitops.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/gfp.h>
+
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
 
@@ -22,37 +28,26 @@ EXPORT_SYMBOL_GPL(gpio_free);
  * @label:	a literal description string of this GPIO
  *
  * **DEPRECATED** This function is deprecated and must not be used in new code.
+ *
+ * Returns:
+ * 0 on success, or negative errno on failure.
  */
 int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
 {
-	struct gpio_desc *desc;
 	int err;
 
-	/* Compatibility: assume unavailable "valid" GPIOs will appear later */
-	desc = gpio_to_desc(gpio);
-	if (!desc)
-		return -EPROBE_DEFER;
-
-	err = gpiod_request(desc, label);
+	err = gpio_request(gpio, label);
 	if (err)
 		return err;
 
-	if (flags & GPIOF_ACTIVE_LOW)
-		set_bit(FLAG_ACTIVE_LOW, &desc->flags);
-
-	if (flags & GPIOF_DIR_IN)
-		err = gpiod_direction_input(desc);
+	if (flags & GPIOF_IN)
+		err = gpio_direction_input(gpio);
 	else
-		err = gpiod_direction_output_raw(desc,
-				(flags & GPIOF_INIT_HIGH) ? 1 : 0);
+		err = gpio_direction_output(gpio, !!(flags & GPIOF_OUT_INIT_HIGH));
 
 	if (err)
-		goto free_gpio;
-
-	return 0;
+		gpio_free(gpio);
 
- free_gpio:
-	gpiod_free(desc);
 	return err;
 }
 EXPORT_SYMBOL_GPL(gpio_request_one);
@@ -72,3 +67,43 @@ int gpio_request(unsigned gpio, const char *label)
 	return gpiod_request(desc, label);
 }
 EXPORT_SYMBOL_GPL(gpio_request);
+
+static void devm_gpio_release(void *gpio)
+{
+	gpio_free((unsigned)(unsigned long)gpio);
+}
+
+/**
+ * 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
+ *
+ * **DEPRECATED** This function is deprecated and must not be used in new code.
+ *
+ * Returns:
+ * 0 on success, or negative errno on failure.
+ */
+int devm_gpio_request_one(struct device *dev, unsigned gpio,
+			  unsigned long flags, const char *label)
+{
+	int rc;
+
+	rc = gpio_request(gpio, label);
+	if (rc)
+		return rc;
+
+	if (flags & GPIOF_IN)
+		rc = gpio_direction_input(gpio);
+	else
+		rc = gpio_direction_output(gpio, !!(flags & GPIOF_OUT_INIT_HIGH));
+
+	if (rc) {
+		gpio_free(gpio);
+		return rc;
+	}
+
+	return devm_add_action_or_reset(dev, devm_gpio_release, (void *)(unsigned long)gpio);
+}
+EXPORT_SYMBOL_GPL(devm_gpio_request_one);