pcxhr_threaded_irq 1570 sound/pci/pcxhr/pcxhr.c pcxhr_threaded_irq, IRQF_SHARED, pcxhr_threaded_irq 190 sound/pci/pcxhr/pcxhr_core.h irqreturn_t pcxhr_threaded_irq(int irq, void *dev_id);