[PATCH 5/8] drm/vboxvideo: Use drm_gem_vram_vmap_unlocked() in cursor update

[Thomas Zimmermann]

This change avoids to pin the source BO and instead acquires the BO's
reservations lock. Prevents concurrent access during the buffer update.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
---
 drivers/gpu/drm/vboxvideo/vbox_mode.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/vboxvideo/vbox_mode.c b/drivers/gpu/drm/vboxvideo/vbox_mode.c
index dbc0dd53c69e..cd3001fa209f 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_mode.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_mode.c
@@ -401,11 +401,8 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
 
 	vbox_crtc->cursor_enabled = true;
 
-	ret = drm_gem_vram_vmap(gbo, &map);
+	ret = drm_gem_vram_vmap_unlocked(gbo, &map, NULL);
 	if (ret) {
-		/*
-		 * BUG: we should have pinned the BO in prepare_fb().
-		 */
 		mutex_unlock(&vbox->hw_mutex);
 		DRM_WARN("Could not map cursor bo, skipping update\n");
 		return;
@@ -421,7 +418,7 @@ static void vbox_cursor_atomic_update(struct drm_plane *plane,
 	data_size = width * height * 4 + mask_size;
 
 	copy_cursor_image(src, vbox->cursor_data, width, height, mask_size);
-	drm_gem_vram_vunmap(gbo, &map);
+	drm_gem_vram_vunmap_unlocked(gbo, &map);
 
 	flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
 		VBOX_MOUSE_POINTER_ALPHA;
-- 
2.29.2