From: Jakob Bornecrantz <jakob@xxxxxxxxxx>
Signed-off-by: Jakob Bornecrantz <jakob@xxxxxxxxxx>
Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index 9089159..be88fc6 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -130,6 +130,7 @@ static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
if (list_empty(&ldu->active))
return 0;
+ /* must init otherwise list_empty(&ldu->active) well not work */
list_del_init(&ldu->active);
if (--(ld->num_active) == 0) {
BUG_ON(!ld->fb);
@@ -208,6 +209,8 @@ static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
/* ldu only supports one fb active at the time */
if (dev_priv->ldu_priv->fb && vfb &&
+ !(dev_priv->ldu_priv->num_active == 1 &&
+ !list_empty(&ldu->active)) &&
dev_priv->ldu_priv->fb != vfb) {
DRM_ERROR("Multiple framebuffers not supported\n");
return -EINVAL;
--
1.6.2.5
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