Please ignore this one, it's to hot here and I'm typing to fast :)
Christian.
Am 20.08.20 um 17:24 schrieb Christian König:
drm-next reverted the changes to ttm_tt_create() to do the
NULL check inside the function, but drm-misc-next adds new
users of this approach.
Re-apply the NULL check change inside the function to fix this.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Dave Airlie <airlied@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/386628/
---
drivers/gpu/drm/ttm/ttm_bo.c | 2 +-
drivers/gpu/drm/ttm/ttm_tt.c | 4 +++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 97ac662a47cb..e3931e515906 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1180,7 +1180,7 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
/*
* We might need to add a TTM.
*/
- if (bo->mem.mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
+ if (bo->mem.mem_type == TTM_PL_SYSTEM) {
ret = ttm_tt_create(bo, true);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 9aa4fbe386e6..1ccf1ef050d6 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -50,6 +50,9 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
dma_resv_assert_held(bo->base.resv);
+ if (bo->ttm)
+ return 0;
+
if (bdev->need_dma32)
page_flags |= TTM_PAGE_FLAG_DMA32;
@@ -67,7 +70,6 @@ int ttm_tt_create(struct ttm_buffer_object *bo, bool zero_alloc)
page_flags |= TTM_PAGE_FLAG_SG;
break;
default:
- bo->ttm = NULL;
pr_err("Illegal buffer object type\n");
return -EINVAL;
}
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