diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c index c5a1a08b0449004670b79947e68f0ba7fb8afb50..cbc1fbaa3d8e52e780151b0456b5ef1fc72993c3 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c @@ -738,6 +738,11 @@ static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty) SVGASignedRect *blit = (SVGASignedRect *) &cmd[1]; int i; + if (!dirty->num_hits) { + vmw_fifo_commit(dirty->dev_priv, 0); + return; + } + cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN; cmd->header.size = sizeof(cmd->body) + region_size; @@ -875,6 +880,11 @@ int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv, */ static void vmw_sou_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty) { + if (!dirty->num_hits) { + vmw_fifo_commit(dirty->dev_priv, 0); + return; + } + vmw_fifo_commit(dirty->dev_priv, sizeof(struct vmw_kms_sou_dmabuf_blit) * dirty->num_hits); @@ -967,6 +977,11 @@ int vmw_kms_sou_do_dmabuf_dirty(struct vmw_private *dev_priv, */ static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty) { + if (!dirty->num_hits) { + vmw_fifo_commit(dirty->dev_priv, 0); + return; + } + vmw_fifo_commit(dirty->dev_priv, sizeof(struct vmw_kms_sou_readback_blit) * dirty->num_hits);