SDMA could be fail in the thaw() and restore() processes, do software reset
if each SDMA engine is busy.
Signed-off-by: NJimQu <Jim.Qu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org