a9c210c1e5
Without doing the soft reset, register mmSDMA0_GFX_RB_WPTR's value could not be reset to 0 when sdma block resumes. That would cause the ring buffer's read and write pointers not equal and ring test fail. So add the soft reset step. Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>