Before assigning window data, we should check if the yuv2yuv vop-data
is set at all, because it looks like it can otherwise reference something
wrong, as I saw on my rk3188 today which ended up in a null pointer
dereference in vop_plane_atomic_update when accessing the yuv2yuv data.
Fixes: 1c21aa8f2b68 ("drm/rockchip: Fix YUV buffers color rendering")
Signed-off-by: Heiko Stuebner <[email protected]>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 619b6db05d58..1dc9fd1ffbe3 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1675,7 +1675,9 @@ static void vop_win_init(struct vop *vop)
vop_win->data = win_data;
vop_win->vop = vop;
- vop_win->yuv2yuv_data = &vop_data->win_yuv2yuv[i];
+
+ if (vop_data->win_yuv2yuv)
+ vop_win->yuv2yuv_data = &vop_data->win_yuv2yuv[i];
}
}
--
2.19.2
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