1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
index 4d7cb5393860..e92298a6a383 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
@@ -64,22 +64,33 @@ static bool vmw_fifo_idle(struct vmw_private *dev_priv, uint32_t sequence)
         return (busy == 0);
 }
 
+void vmw_update_sequence(struct vmw_private *dev_priv,
+                         struct vmw_fifo_state *fifo_state)
+{
+        __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+
+        uint32_t sequence = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+
+        if (dev_priv->last_read_sequence != sequence) {
+                dev_priv->last_read_sequence = sequence;
+                vmw_fence_pull(&fifo_state->fence_queue, sequence);
+        }
+}
 
 bool vmw_fence_signaled(struct vmw_private *dev_priv,
                         uint32_t sequence)
 {
-        __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
         struct vmw_fifo_state *fifo_state;
         bool ret;
 
         if (likely(dev_priv->last_read_sequence - sequence < VMW_FENCE_WRAP))
                 return true;
 
-        dev_priv->last_read_sequence = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+        fifo_state = &dev_priv->fifo;
+        vmw_update_sequence(dev_priv, fifo_state);
         if (likely(dev_priv->last_read_sequence - sequence < VMW_FENCE_WRAP))
                 return true;
 
-        fifo_state = &dev_priv->fifo;
         if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE) &&
             vmw_fifo_idle(dev_priv, sequence))
                 return true;