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From 1fd19ee9fe9870bb5bd2b6bfc561ad18c3376272 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Tue, 3 Oct 2017 12:39:01 +1000
Subject: [PATCH 2463/4131] amdgpu/dc: convert dc_sink to kref.
Refcounts use krefs.
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_sink.c | 20 ++++++++++----------
drivers/gpu/drm/amd/display/dc/dc.h | 2 +-
2 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
index 3d620d3..25fae38 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
@@ -63,19 +63,19 @@ static bool construct(struct dc_sink *sink, const struct dc_sink_init_data *init
void dc_sink_retain(struct dc_sink *sink)
{
- ASSERT(atomic_read(&sink->ref_count) > 0);
- atomic_inc(&sink->ref_count);
+ kref_get(&sink->refcount);
}
-void dc_sink_release(struct dc_sink *sink)
+static void dc_sink_free(struct kref *kref)
{
- ASSERT(atomic_read(&sink->ref_count) > 0);
- atomic_dec(&sink->ref_count);
+ struct dc_sink *sink = container_of(kref, struct dc_sink, refcount);
+ destruct(sink);
+ kfree(sink);
+}
- if (atomic_read(&sink->ref_count) == 0) {
- destruct(sink);
- kfree(sink);
- }
+void dc_sink_release(struct dc_sink *sink)
+{
+ kref_put(&sink->refcount, dc_sink_free);
}
struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params)
@@ -88,7 +88,7 @@ struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params)
if (false == construct(sink, init_params))
goto construct_fail;
- atomic_inc(&sink->ref_count);
+ kref_init(&sink->refcount);
return sink;
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 542ba05..9967d4a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -983,7 +983,7 @@ struct dc_sink {
struct dc_context *ctx;
/* private to dc_sink.c */
- atomic_t ref_count;
+ struct kref refcount;
};
void dc_sink_retain(struct dc_sink *sink);
--
2.7.4
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