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authorDave Airlie <airlied@redhat.com>2020-03-12 05:42:41 +0300
committerDave Airlie <airlied@redhat.com>2020-03-12 05:42:56 +0300
commit9e12da086e5e38f7b4f8d6e02a82447f4165fbee (patch)
tree96e6029378ccb9ae3f9530d019c8216a3ca4a556 /drivers/gpu/drm/ttm
parentd3bd37f587b4438d47751d0f1d5aaae3d39bd416 (diff)
parentbc1a4130fc0309cc2f43b9cc616ebbc295e886ff (diff)
downloadlinux-9e12da086e5e38f7b4f8d6e02a82447f4165fbee.tar.xz
Merge tag 'drm-misc-next-2020-03-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 5.7: UAPI Changes: Cross-subsystem Changes: Core Changes: Driver Changes: - fb-helper: Remove drm_fb_helper_{add,add_all,remove}_one_connector - fbdev: some cleanups and dead-code removal - Conversions to simple-encoder - zero-length array removal - Panel: panel-dpi support in panel-simple, Novatek NT35510, Elida KD35T133, Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20200309135439.dicfnbo4ikj4tkz7@gilmour
Diffstat (limited to 'drivers/gpu/drm/ttm')
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 151edfd8de77..6d1e91be9c78 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1196,6 +1196,18 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
uint32_t new_flags;
dma_resv_assert_held(bo->base.resv);
+
+ /*
+ * Remove the backing store if no placement is given.
+ */
+ if (!placement->num_placement && !placement->num_busy_placement) {
+ ret = ttm_bo_pipeline_gutting(bo);
+ if (ret)
+ return ret;
+
+ return ttm_tt_create(bo, false);
+ }
+
/*
* Check whether we need to move buffer.
*/