aboutsummaryrefslogtreecommitdiff
path: root/drivers/remoteproc/remoteproc_core.c
diff options
context:
space:
mode:
authorOhad Ben-Cohen <ohad@wizery.com>2012-05-30 22:02:24 +0300
committerOhad Ben-Cohen <ohad@wizery.com>2012-07-06 00:53:25 +0300
commit7183a2a799b81490354973117ecd810c23cdc668 (patch)
treecfd720d9a745f8d010120ca434246336423aea32 /drivers/remoteproc/remoteproc_core.c
parentb5ab5e24e960b9f780a4cc96815cfd4b0d412720 (diff)
downloadlinux-7183a2a799b81490354973117ecd810c23cdc668.tar.gz
remoteproc: remove the now-redundant kref
Now that every rproc instance contains a device, we don't need a kref anymore to maintain the refcount of the rproc instances: that's what device are good with! This patch removes the now-redundant kref, and switches to {get, put}_device instead of kref_{get, put}. We also don't need the kref's release function anymore, and instead, we just utilize the class's release handler (which is now responsible for all memory de-allocations). Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'drivers/remoteproc/remoteproc_core.c')
-rw-r--r--drivers/remoteproc/remoteproc_core.c50
1 files changed, 11 insertions, 39 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 25f93784383..aa713aade30 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1257,42 +1257,12 @@ out:
}
EXPORT_SYMBOL(rproc_shutdown);
-/**
- * rproc_release() - completely deletes the existence of a remote processor
- * @kref: the rproc's kref
- *
- * This function should _never_ be called directly.
- *
- * The only reasonable location to use it is as an argument when kref_put'ing
- * @rproc's refcount.
- *
- * This way it will be called when no one holds a valid pointer to this @rproc
- * anymore (and obviously after it is removed from the rprocs klist).
- *
- * Note: this function is not static because rproc_vdev_release() needs it when
- * it decrements @rproc's refcount.
- */
-void rproc_release(struct kref *kref)
-{
- struct rproc *rproc = container_of(kref, struct rproc, refcount);
-
- dev_info(&rproc->dev, "removing %s\n", rproc->name);
-
- rproc_delete_debug_dir(rproc);
-
- /*
- * At this point no one holds a reference to rproc anymore,
- * so we can directly unroll rproc_alloc()
- */
- rproc_free(rproc);
-}
-
/* will be called when an rproc is added to the rprocs klist */
static void klist_rproc_get(struct klist_node *n)
{
struct rproc *rproc = container_of(n, struct rproc, node);
- kref_get(&rproc->refcount);
+ get_device(&rproc->dev);
}
/* will be called when an rproc is removed from the rprocs klist */
@@ -1300,7 +1270,7 @@ static void klist_rproc_put(struct klist_node *n)
{
struct rproc *rproc = container_of(n, struct rproc, node);
- kref_put(&rproc->refcount, rproc_release);
+ put_device(&rproc->dev);
}
static struct rproc *next_rproc(struct klist_iter *i)
@@ -1342,7 +1312,7 @@ struct rproc *rproc_get_by_name(const char *name)
klist_iter_init(&rprocs, &i);
while ((rproc = next_rproc(&i)) != NULL)
if (!strcmp(rproc->name, name)) {
- kref_get(&rproc->refcount);
+ get_device(&rproc->dev);
break;
}
klist_iter_exit(&i);
@@ -1355,7 +1325,7 @@ struct rproc *rproc_get_by_name(const char *name)
ret = rproc_boot(rproc);
if (ret < 0) {
- kref_put(&rproc->refcount, rproc_release);
+ put_device(&rproc->dev);
return NULL;
}
@@ -1382,7 +1352,7 @@ void rproc_put(struct rproc *rproc)
rproc_shutdown(rproc);
/* downref rproc's refcount */
- kref_put(&rproc->refcount, rproc_release);
+ put_device(&rproc->dev);
}
EXPORT_SYMBOL(rproc_put);
@@ -1463,6 +1433,10 @@ static void rproc_type_release(struct device *dev)
{
struct rproc *rproc = container_of(dev, struct rproc, dev);
+ dev_info(&rproc->dev, "releasing %s\n", rproc->name);
+
+ rproc_delete_debug_dir(rproc);
+
idr_remove_all(&rproc->notifyids);
idr_destroy(&rproc->notifyids);
@@ -1536,8 +1510,6 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
atomic_set(&rproc->power, 0);
- kref_init(&rproc->refcount);
-
mutex_init(&rproc->lock);
idr_init(&rproc->notifyids);
@@ -1608,8 +1580,8 @@ int rproc_unregister(struct rproc *rproc)
device_del(&rproc->dev);
- /* the rproc will only be released after its refcount drops to zero */
- kref_put(&rproc->refcount, rproc_release);
+ /* unroll rproc_alloc. TODO: we may want to let the users do that */
+ put_device(&rproc->dev);
return 0;
}