[Intel-gfx] [PATCH i-g-t] lib/igt_kms: Fix atomic plane commit when fb_id is 0.

[Marius Vlad]

igt_atomic_prepare_plane_commit() assumes that the framebuffer is always
set-up.

Signed-off-by: Marius Vlad <marius.c.vlad at intel.com>
---
 lib/igt_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 82257a6..30c5b7e 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -1585,7 +1585,7 @@ igt_atomic_prepare_plane_commit(igt_plane_t *plane, igt_output_t *output,
 		igt_atomic_populate_plane_req(req, plane, IGT_PLANE_FB_ID, fb_id);
 	}
 
-	if (plane->position_changed || plane->size_changed) {
+	if ((plane->position_changed || plane->size_changed) && fb_id != 0) {
 		uint32_t src_x = IGT_FIXED(plane->fb->src_x, 0); /* src_x */
 		uint32_t src_y = IGT_FIXED(plane->fb->src_y, 0); /* src_y */
 		uint32_t src_w = IGT_FIXED(plane->fb->src_w, 0); /* src_w */
-- 
2.5.0