dm: core: allow device_bind() to not return a device pointer

[karo-tx-uboot.git] / include / dm / device-internal.h

diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h
index a2bf0579ff58188b745a00c312b34753e543bb9e..322d35a4789c2f81a1401d066af09f3a47b22983 100644 (file)
--- a/include/dm/device-internal.h
+++ b/include/dm/device-internal.h
@@ -31,7 +31,7 @@ struct udevice;
  * devices which use device tree.
  * @of_offset: Offset of device tree node for this device. This is -1 for
  * devices which don't use device tree.
- * @devp: Returns a pointer to the bound device
+ * @devp: if non-NULL, returns a pointer to the bound device
  * @return 0 if OK, -ve on error
  */
 int device_bind(struct udevice *parent, const struct driver *drv,
@@ -48,7 +48,7 @@ int device_bind(struct udevice *parent, const struct driver *drv,
  * @pre_reloc_only: If true, bind the driver only if its DM_INIT_F flag is set.
  * If false bind the driver always.
  * @info: Name and platdata for this device
- * @devp: Returns a pointer to the bound device
+ * @devp: if non-NULL, returns a pointer to the bound device
  * @return 0 if OK, -ve on error
  */
 int device_bind_by_name(struct udevice *parent, bool pre_reloc_only,
@@ -87,7 +87,7 @@ int device_probe_child(struct udevice *dev, void *parent_priv);
  * @dev: Pointer to device to remove
  * @return 0 if OK, -ve on error (an error here is normally a very bad thing)
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int device_remove(struct udevice *dev);
 #else
 static inline int device_remove(struct udevice *dev) { return 0; }
@@ -101,7 +101,7 @@ static inline int device_remove(struct udevice *dev) { return 0; }
  * @dev: Pointer to device to unbind
  * @return 0 if OK, -ve on error
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int device_unbind(struct udevice *dev);
 #else
 static inline int device_unbind(struct udevice *dev) { return 0; }
@@ -112,7 +112,7 @@ static inline int device_unbind(struct udevice *dev) { return 0; }
  * @dev:       The device whose children are to be removed
  * @return 0 on success, -ve on error
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int device_remove_children(struct udevice *dev);
 #else
 static inline int device_remove_children(struct udevice *dev) { return 0; }
@@ -127,13 +127,13 @@ static inline int device_remove_children(struct udevice *dev) { return 0; }
  * @dev:       The device that is to be stripped of its children
  * @return 0 on success, -ve on error
  */
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 int device_unbind_children(struct udevice *dev);
 #else
 static inline int device_unbind_children(struct udevice *dev) { return 0; }
 #endif
 
-#ifdef CONFIG_DM_DEVICE_REMOVE
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
 void device_free(struct udevice *dev);
 #else
 static inline void device_free(struct udevice *dev) {}
@@ -156,6 +156,8 @@ fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr);
 #define DM_UCLASS_ROOT_NON_CONST       (((gd_t *)gd)->uclass_root)
 
 /* device resource management */
+#ifdef CONFIG_DEVRES
+
 /**
  * devres_release_probe - Release managed resources allocated after probing
  * @dev: Device to release resources for
@@ -174,4 +176,15 @@ void devres_release_probe(struct udevice *dev);
  */
 void devres_release_all(struct udevice *dev);
 
+#else /* ! CONFIG_DEVRES */
+
+static inline void devres_release_probe(struct udevice *dev)
+{
+}
+
+static inline void devres_release_all(struct udevice *dev)
+{
+}
+
+#endif /* ! CONFIG_DEVRES */
 #endif