[Intel-gfx] [PATCH 1/2] drm/i915/buddy: avoid double list_add

[Matthew Auld]

Be careful not to mark an already free node as free again.

Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_buddy.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_buddy.c b/drivers/gpu/drm/i915/i915_buddy.c
index 66883af64ca1..20babbdb297d 100644
--- a/drivers/gpu/drm/i915/i915_buddy.c
+++ b/drivers/gpu/drm/i915/i915_buddy.c
@@ -312,7 +312,8 @@ i915_buddy_alloc(struct i915_buddy_mm *mm, unsigned int order)
 	return block;
 
 out_free:
-	__i915_buddy_free(mm, block);
+	if (i != order)
+		__i915_buddy_free(mm, block);
 	return ERR_PTR(err);
 }
 
-- 
2.20.1