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drm/ttm: stop destroying pinned ghost object

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Daniel added a warning for this, but we were abusing that behavior here.

Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 57fcd550eb ("drm/ttm: Warn on pinning without holding a reference")
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/series/84456/
This commit is contained in:
Christian König 2020-12-01 14:27:34 +01:00
parent 551620f2a3
commit b73cd1e2eb
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/ttm/ttm_bo_util.c
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@ -310,7 +310,7 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
kref_init(&fbo->base.kref);
fbo->base.destroy = &ttm_transfered_destroy;
fbo->base.acc_size = 0;
fbo->base.pin_count = 1;
fbo->base.pin_count = 0;
if (bo->type != ttm_bo_type_sg)
fbo->base.base.resv = &fbo->base.base._resv;
@ -319,6 +319,8 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
ret = dma_resv_trylock(&fbo->base.base._resv);
WARN_ON(!ret);
ttm_bo_move_to_lru_tail_unlocked(&fbo->base);
*new_obj = &fbo->base;
return 0;
}