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qxl: don't unref cursor bo inside atomic section (release mapping).

PATCH In review Dave Airlie 2 participants 2 messages Jun 18, 2018

Subsystems (3)
DRM drivers DRM misc DRM driver for QXL virtual GPU
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Dave Airlie

author maintainer
#0 lore raw

PATCH 1/1 qxl: don't unref cursor bo inside atomic section (release mapping).

From: Dave Airlie <[email protected]>

Fixes 9428088c (drm/qxl: reapply cursor after resetting primary)
Reported-by Mike Galbraith <[email protected]>
Cc [email protected]
Signed-off-by Dave Airlie <[email protected]>
---
 drivers/gpu/drm/qxl/qxl_display.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
drivers/gpu/drm/qxl/qxl_display.c +5 -2
index b8cda9449241..768207fbbae3 100644
@@ -623,7 +623,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 	struct qxl_cursor_cmd *cmd;
 	struct qxl_cursor *cursor;
 	struct drm_gem_object *obj;
-	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL;
+	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL;
 	int ret;
 	void *user_ptr;
 	int size = 64*64*4;

@@ -677,7 +677,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 							   cursor_bo, 0);
 		cmd->type = QXL_CURSOR_SET;
 
-		qxl_bo_unref(&qcrtc->cursor_bo);
+		old_cursor_bo = qcrtc->cursor_bo;
 		qcrtc->cursor_bo = cursor_bo;
 		cursor_bo = NULL;
 	} else {

@@ -697,6 +697,9 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 	qxl_release_fence_buffer_objects(release);
 
+	if (old_cursor_bo)
+		qxl_bo_unref(&old_cursor_bo);
+
 	qxl_bo_unref(&cursor_bo);
 
 	return;
Signature · 6 lines
2.17.0

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Reviewed-by on v1 1/1
#1 lore raw
Quoted 6 lines · Dave Airlie

From: Dave Airlie <[email protected]>

Fixes 9428088c (drm/qxl: reapply cursor after resetting primary)
Reported-by Mike Galbraith <[email protected]>
Cc [email protected]
Signed-off-by Dave Airlie <[email protected]>
Reviewed-by Daniel Vetter <[email protected]>
Quoted 43 lines
---
 drivers/gpu/drm/qxl/qxl_display.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
drivers/gpu/drm/qxl/qxl_display.c +5 -2
index b8cda9449241..768207fbbae3 100644
@@ -623,7 +623,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 	struct qxl_cursor_cmd *cmd;
 	struct qxl_cursor *cursor;
 	struct drm_gem_object *obj;
-	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL;
+	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL;
 	int ret;
 	void *user_ptr;
 	int size = 64*64*4;

@@ -677,7 +677,7 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 							   cursor_bo, 0);
 		cmd->type = QXL_CURSOR_SET;
 
-		qxl_bo_unref(&qcrtc->cursor_bo);
+		old_cursor_bo = qcrtc->cursor_bo;
 		qcrtc->cursor_bo = cursor_bo;
 		cursor_bo = NULL;
 	} else {

@@ -697,6 +697,9 @@ static void qxl_cursor_atomic_update(struct drm_plane *plane,
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 	qxl_release_fence_buffer_objects(release);
 
+	if (old_cursor_bo)
+		qxl_bo_unref(&old_cursor_bo);
+
 	qxl_bo_unref(&cursor_bo);
 
 	return;
Signature · 6 lines
2.17.0

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Signature · 7 lines
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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