Merge branch 'reset/for_v3.15' of git://git.pengutronix.de/git/pza/linux into next/drivers

Merge "reset controller fixes and updates" from Philipp Zabel:

* 'reset/for_v3.15' of git://git.pengutronix.de/git/pza/linux:
  reset: Add optional resets and stubs
  reset: Add of_reset_control_get
  reset: Mark function as static and remove unused function in core.c
  reset: allow drivers to request probe deferral

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 64 insertions, 1 deletions

diff --git a/include/linux/reset.h b/include/linux/reset.h
index 6082247feab1..c0eda5023d74 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -4,6 +4,8 @@
 struct device;
 struct reset_control;
 
+#ifdef CONFIG_RESET_CONTROLLER
+
 int reset_control_reset(struct reset_control *rstc);
 int reset_control_assert(struct reset_control *rstc);
 int reset_control_deassert(struct reset_control *rstc);
@@ -12,6 +14,67 @@ struct reset_control *reset_control_get(struct device *dev, const char *id);
 void reset_control_put(struct reset_control *rstc);
 struct reset_control *devm_reset_control_get(struct device *dev, const char *id);
 
-int device_reset(struct device *dev);
+int __must_check device_reset(struct device *dev);
+
+static inline int device_reset_optional(struct device *dev)
+{
+        return device_reset(dev);
+}
+
+static inline struct reset_control *reset_control_get_optional(
+                                        struct device *dev, const char *id)
+{
+        return reset_control_get(dev, id);
+}
+
+static inline struct reset_control *devm_reset_control_get_optional(
+                                        struct device *dev, const char *id)
+{
+        return devm_reset_control_get(dev, id);
+}
+
+#else
+
+static inline int reset_control_reset(struct reset_control *rstc)
+{
+        WARN_ON(1);
+        return 0;
+}
+
+static inline int reset_control_assert(struct reset_control *rstc)
+{
+        WARN_ON(1);
+        return 0;
+}
+
+static inline int reset_control_deassert(struct reset_control *rstc)
+{
+        WARN_ON(1);
+        return 0;
+}
+
+static inline void reset_control_put(struct reset_control *rstc)
+{
+        WARN_ON(1);
+}
+
+static inline int device_reset_optional(struct device *dev)
+{
+        return -ENOSYS;
+}
+
+static inline struct reset_control *reset_control_get_optional(
+                                        struct device *dev, const char *id)
+{
+        return ERR_PTR(-ENOSYS);
+}
+
+static inline struct reset_control *devm_reset_control_get_optional(
+                                        struct device *dev, const char *id)
+{
+        return ERR_PTR(-ENOSYS);
+}
+
+#endif /* CONFIG_RESET_CONTROLLER */
 
 #endif