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drm/ttm: fix ttm_bo_add_ttm(user) failure path

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ttm_tt_destroy kfrees passed object, so we need to nullify
a reference to it.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: stable@kernel.org
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Marcin Slusarz 2011-08-22 21:17:57 +00:00 committed by Dave Airlie
parent ba95c45a78
commit 7c4c3960df
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/ttm/ttm_bo.c
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@ -353,8 +353,10 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc)
ret = ttm_tt_set_user(bo->ttm, current,
bo->buffer_start, bo->num_pages);
if (unlikely(ret != 0))
if (unlikely(ret != 0)) {
ttm_tt_destroy(bo->ttm);
bo->ttm = NULL;
}
break;
default:
printk(KERN_ERR TTM_PFX "Illegal buffer object type\n");