remoteproc: Split driver and consumer dereferencing

In order to be able to lock a rproc driver implementations only when
used by a client, we must differ between the dereference operation of a
client and the implementation itself.

This patch brings no functional change.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

1 files changed, 18 insertions, 3 deletions

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 3da566b..ede3af1 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1307,7 +1307,7 @@ static struct device_type rproc_type = {
  * On success the new rproc is returned, and on failure, NULL.
  *
  * Note: _never_ directly deallocate @rproc, even if it was not registered
- * yet. Instead, when you need to unroll rproc_alloc(), use rproc_put().
+ * yet. Instead, when you need to unroll rproc_alloc(), use rproc_free().
  */
 struct rproc *rproc_alloc(struct device *dev, const char *name,
 			  const struct rproc_ops *ops,
@@ -1386,7 +1386,22 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
 EXPORT_SYMBOL(rproc_alloc);
 
 /**
- * rproc_put() - unroll rproc_alloc()
+ * rproc_free() - unroll rproc_alloc()
+ * @rproc: the remote processor handle
+ *
+ * This function decrements the rproc dev refcount.
+ *
+ * If no one holds any reference to rproc anymore, then its refcount would
+ * now drop to zero, and it would be freed.
+ */
+void rproc_free(struct rproc *rproc)
+{
+	put_device(&rproc->dev);
+}
+EXPORT_SYMBOL(rproc_free);
+
+/**
+ * rproc_put() - release rproc reference
  * @rproc: the remote processor handle
  *
  * This function decrements the rproc dev refcount.
@@ -1411,7 +1426,7 @@ EXPORT_SYMBOL(rproc_put);
  *
  * After rproc_del() returns, @rproc isn't freed yet, because
  * of the outstanding reference created by rproc_alloc. To decrement that
- * one last refcount, one still needs to call rproc_put().
+ * one last refcount, one still needs to call rproc_free().
  *
  * Returns 0 on success and -EINVAL if @rproc isn't valid.
  */