The kernel patch "drm/amdgpu: pin the csb buffer on hw init for gfx v8" (Upstream commit 72cda9bb5e219aea0f2f62f56ae05198c59022a7) has already been applied to Disco as part of bug #1842128 (Disco update: upstream stable patchset 2019-08-30).
The kernel patch "drm/amdgpu: pin the csb buffer on hw init for gfx v8" (Upstream commit 72cda9bb5e219ae a0f2f62f56ae051 98c59022a7) has already been applied to Disco as part of bug #1842128 (Disco update: upstream stable patchset 2019-08-30).