linux-kernel - [PATCH 4.14 092/167] drm/qxl: unref cursor bo when finished with it

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Date:   Wed, 21 Feb 2018 13:48:23 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ray Strode <rstrode@...hat.com>,
        Dave Airlie <airlied@...hat.com>
Subject: [PATCH 4.14 092/167] drm/qxl: unref cursor bo when finished with it

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ray Strode <rstrode@...hat.com>

commit 16c6db3688734b27487a42d0c2a1062d0b2bad03 upstream.

qxl_cursor_atomic_update allocs a bo for the cursor that
it never frees up at the end of the function.

This commit fixes that.

Signed-off-by: Ray Strode <rstrode@...hat.com>
Cc: stable@...r.kernel.org
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/qxl/qxl_display.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -564,7 +564,7 @@ static void qxl_cursor_atomic_update(str
 	struct qxl_cursor_cmd *cmd;
 	struct qxl_cursor *cursor;
 	struct drm_gem_object *obj;
-	struct qxl_bo *cursor_bo, *user_bo = NULL;
+	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL;
 	int ret;
 	void *user_ptr;
 	int size = 64*64*4;
@@ -634,6 +634,8 @@ static void qxl_cursor_atomic_update(str
 	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 	qxl_release_fence_buffer_objects(release);
 
+	qxl_bo_unref(&cursor_bo);
+
 	return;
 
 out_backoff: