IPR_MUTE 39 sound/pci/emu10k1/irq.c if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) { IPR_MUTE 44 sound/pci/emu10k1/irq.c status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE);