NOISE_REDUCTION 260 sound/pci/hda/patch_ca0132.c .nid = NOISE_REDUCTION, NOISE_REDUCTION 4900 sound/pci/hda/patch_ca0132.c if ((nid == NOISE_REDUCTION) && ca0132_use_pci_mmio(spec) NOISE_REDUCTION 4904 sound/pci/hda/patch_ca0132.c if (spec->effects_switch[NOISE_REDUCTION -