Before we attempt to set_pages on the vma, we claim a
obj.pages_pin_count for it. If we subsequently fail to set the pages on
the vma, we need to drop our pinning before returning the error.
Reported-by: Matthew Auld <matthew.a...@intel.com>
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.a...@intel.com>
---
drivers/gpu/drm/i915/i915_vma.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 9fdcd4e2c799..7d936254bde7 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -802,8 +802,11 @@ static int vma_get_pages(struct i915_vma *vma)
}
err = vma->ops->set_pages(vma);
- if (err)
+ if (err) {
+ if (vma->obj)
+ i915_gem_object_unpin_pages(vma->obj);
goto unlock;
+ }
}
atomic_inc(&vma->pages_count);
--
2.23.0
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