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drm/i915: Cleanup the hws on ringbuffer constrution failure. 

If we fail to create the ringbuffer, then we need to cleanup the allocated
hws.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Chris Wilson 2009-02-11 14:52:44 +00:00 committed by Dave Airlie
parent 67eabc0553
commit 85a7bb9858
1 changed files with 25 additions and 14 deletions
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39
drivers/gpu/drm/i915/i915_gem.c
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@ -3119,6 +3119,27 @@ i915_gem_init_hws(struct drm_device *dev)
return 0;
}
static void
i915_gem_cleanup_hws(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_gem_object *obj = dev_priv->hws_obj;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
if (dev_priv->hws_obj == NULL)
return;
kunmap(obj_priv->page_list[0]);
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
dev_priv->hws_obj = NULL;
memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
dev_priv->hw_status_page = NULL;
/* Write high address into HWS_PGA when disabling. */
I915_WRITE(HWS_PGA, 0x1ffff000);
}
int
i915_gem_init_ringbuffer(struct drm_device *dev)
{
@ -3136,6 +3157,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
obj = drm_gem_object_alloc(dev, 128 * 1024);
if (obj == NULL) {
DRM_ERROR("Failed to allocate ringbuffer\n");
i915_gem_cleanup_hws(dev);
return -ENOMEM;
}
obj_priv = obj->driver_private;
@ -3143,6 +3165,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
ret = i915_gem_object_pin(obj, 4096);
if (ret != 0) {
drm_gem_object_unreference(obj);
i915_gem_cleanup_hws(dev);
return ret;
}
@ -3162,6 +3185,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
i915_gem_cleanup_hws(dev);
return -EINVAL;
}
ring->ring_obj = obj;
@ -3241,20 +3265,7 @@ i915_gem_cleanup_ringbuffer(struct drm_device *dev)
dev_priv->ring.ring_obj = NULL;
memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
if (dev_priv->hws_obj != NULL) {
struct drm_gem_object *obj = dev_priv->hws_obj;
struct drm_i915_gem_object *obj_priv = obj->driver_private;
kunmap(obj_priv->page_list[0]);
i915_gem_object_unpin(obj);
drm_gem_object_unreference(obj);
dev_priv->hws_obj = NULL;
memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
dev_priv->hw_status_page = NULL;
/* Write high address into HWS_PGA when disabling. */
I915_WRITE(HWS_PGA, 0x1ffff000);
}
i915_gem_cleanup_hws(dev);
}
int