Make sure intel_unpin_ringbuffer_obj() can handle the case where the
ringbuffer has been allocated but map-and-pin failed. Return early if
the ringbuffer isn't mapped [Chris Wilson].
That allows us to simplify the cleanup path in intel_init_ring_buffer(),
as it can just take the error exit and let intel_cleanup_ring_buffer()
deal with any partially-set-up state.
Signed-off-by: Dave Gordon <david.s.gordon@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 6f5b511..3e1aec8 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2055,6 +2055,9 @@ static int init_phys_status_page(struct intel_engine_cs *ring)
void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ringbuf)
{
+ if (!ringbuf->virtual_start)
+ return;
+
if (HAS_LLC(ringbuf->obj->base.dev) && !ringbuf->obj->stolen)
vunmap(ringbuf->virtual_start);
else
@@ -2232,6 +2235,13 @@ static int intel_init_ring_buffer(struct drm_device *dev,
}
ring->buffer = ringbuf;
+ ret = intel_pin_and_map_ringbuffer_obj(dev, ringbuf);
+ if (ret) {
+ DRM_ERROR("Failed to pin and map ringbuffer %s: %d\n",
+ ring->name, ret);
+ goto error;
+ }
+
if (I915_NEED_GFX_HWS(dev)) {
ret = init_status_page(ring);
if (ret)
@@ -2243,14 +2253,6 @@ static int intel_init_ring_buffer(struct drm_device *dev,
goto error;
}
- ret = intel_pin_and_map_ringbuffer_obj(dev, ringbuf);
- if (ret) {
- DRM_ERROR("Failed to pin and map ringbuffer %s: %d\n",
- ring->name, ret);
- intel_destroy_ringbuffer_obj(ringbuf);
- goto error;
- }
-
ret = i915_cmd_parser_init_ring(ring);
if (ret)
goto error;
--
1.9.1
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