drm/ttm: once more fix ttm_buffer_object_transfer

commit 4d98e5ee6084f6d7bc578c5d5f86de7156aaa4cb upstream.

When the mutex is locked just in the moment we copy it we end up with a
warning that we release a locked mutex.

Fix this by properly reinitializing the mutex.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index c934ad5b39036c6de16265e8c2e9cbf61873d6fe..7c2fbdbbd04887a1491696fbbb13bf76870486a0 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -474,6 +474,7 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
        INIT_LIST_HEAD(&fbo->lru);
        INIT_LIST_HEAD(&fbo->swap);
        INIT_LIST_HEAD(&fbo->io_reserve_lru);
+       mutex_init(&fbo->wu_mutex);
        fbo->moving = NULL;
        drm_vma_node_reset(&fbo->vma_node);
        atomic_set(&fbo->cpu_writers, 0);