drm/ttm: make sure that we always zero init mem.bus v2

We are trying to remove the io_lru handling and depend
on zero init base, offset and addr here.

v2: init addr as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/388642/

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index e3931e515906e80f5007742ca75944d9d55a11b8..772c640a6046a256d65e24a3fe7400e27f2d94fb 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -650,6 +650,9 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo,
        evict_mem.mm_node = NULL;
        evict_mem.bus.io_reserved_vm = false;
        evict_mem.bus.io_reserved_count = 0;
+       evict_mem.bus.base = 0;
+       evict_mem.bus.offset = 0;
+       evict_mem.bus.addr = NULL;
 
        ret = ttm_bo_mem_space(bo, &placement, &evict_mem, ctx);
        if (ret) {
@@ -1084,6 +1087,9 @@ static int ttm_bo_move_buffer(struct ttm_buffer_object *bo,
        mem.page_alignment = bo->mem.page_alignment;
        mem.bus.io_reserved_vm = false;
        mem.bus.io_reserved_count = 0;
+       mem.bus.base = 0;
+       mem.bus.offset = 0;
+       mem.bus.addr = NULL;
        mem.mm_node = NULL;
 
        /*
@@ -1243,6 +1249,9 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev,
        bo->mem.page_alignment = page_alignment;
        bo->mem.bus.io_reserved_vm = false;
        bo->mem.bus.io_reserved_count = 0;
+       bo->mem.bus.base = 0;
+       bo->mem.bus.offset = 0;
+       bo->mem.bus.addr = NULL;
        bo->moving = NULL;
        bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED);
        bo->acc_size = acc_size;