Please apply commit 9dd7c46346ca Author: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Date: Tue Apr 5 16:41:18 2022 -0700 sound/oss/dmasound: fix build when drivers are mixed =y/=m to the 5.10 stable tree. The kernel test robot <lkp@xxxxxxxxx> reported a build error on 5.10.y and this patch fixes the build error. -- ~Randy