From ed0dfad6b793be234665d361cd70a63fe870fe00 Mon Sep 17 00:00:00 2001
From: Matthew Auld <matthew.auld@intel.com>
Date: Wed, 13 Apr 2022 09:21:33 +0100
Subject: drm/ttm: fixup ttm_bo_add_move_fence v2
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Git-commit: 7be2bb8c2ff3f769c49f5a527e7ea992b81e9ca1
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

It looks like we still need to call dma_fence_put() on the man->move,
otherwise we just end up leaking it, leading to fireworks later.

v2(Daniel):
  - Simplify the function tail

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5689
Fixes: 8bb31587820a ("drm/ttm: remove bo->moving")
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220413082133.272445-1-matthew.auld@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/ttm/ttm_bo.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 015a94f766de..75d308ec173d 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -740,11 +740,8 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
 	dma_resv_add_fence(bo->base.resv, fence, DMA_RESV_USAGE_KERNEL);
 
 	ret = dma_resv_reserve_fences(bo->base.resv, 1);
-	if (unlikely(ret)) {
-		dma_fence_put(fence);
-		return ret;
-	}
-	return 0;
+	dma_fence_put(fence);
+	return ret;
 }
 
 /*
-- 
2.38.1