AD1988_6STACK 2874 sound/pci/hda/patch_analog.c [AD1988_6STACK] = "6stack", AD1988_6STACK 2920 sound/pci/hda/patch_analog.c board_config = AD1988_6STACK; AD1988_6STACK 2925 sound/pci/hda/patch_analog.c case AD1988_6STACK: