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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
index cb55b7b66377..87e39f68e9d0 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c
@@ -35,6 +35,7 @@
#include "svga_escape.h"
#define VMW_MAX_NUM_STREAMS 1
+#define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE)
struct vmw_stream {
struct vmw_dma_buffer *buf;
@@ -449,6 +450,14 @@ int vmw_overlay_pause_all(struct vmw_private *dev_priv)
return 0;
}
+
+static bool vmw_overlay_available(const struct vmw_private *dev_priv)
+{
+ return (dev_priv->overlay_priv != NULL &&
+ ((dev_priv->fifo.capabilities & VMW_OVERLAY_CAP_MASK) ==
+ VMW_OVERLAY_CAP_MASK));
+}
+
int vmw_overlay_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@@ -461,7 +470,7 @@ int vmw_overlay_ioctl(struct drm_device *dev, void *data,
struct vmw_resource *res;
int ret;
- if (!overlay)
+ if (!vmw_overlay_available(dev_priv))
return -ENOSYS;
ret = vmw_user_stream_lookup(dev_priv, tfile, &arg->stream_id, &res);
@@ -492,7 +501,7 @@ out_unlock:
int vmw_overlay_num_overlays(struct vmw_private *dev_priv)
{
- if (!dev_priv->overlay_priv)
+ if (!vmw_overlay_available(dev_priv))
return 0;
return VMW_MAX_NUM_STREAMS;
@@ -503,7 +512,7 @@ int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv)
struct vmw_overlay *overlay = dev_priv->overlay_priv;
int i, k;
- if (!overlay)
+ if (!vmw_overlay_available(dev_priv))
return 0;
mutex_lock(&overlay->mutex);
@@ -569,12 +578,6 @@ int vmw_overlay_init(struct vmw_private *dev_priv)
if (dev_priv->overlay_priv)
return -EINVAL;
- if (!(dev_priv->fifo.capabilities & SVGA_FIFO_CAP_VIDEO) &&
- (dev_priv->fifo.capabilities & SVGA_FIFO_CAP_ESCAPE)) {
- DRM_INFO("hardware doesn't support overlays\n");
- return -ENOSYS;
- }
-
overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
if (!overlay)
return -ENOMEM;