cobalt_irq_handler 378 drivers/media/pci/cobalt/cobalt-driver.c if (request_irq(pci_dev->irq, cobalt_irq_handler, IRQF_SHARED, cobalt_irq_handler 11 drivers/media/pci/cobalt/cobalt-irq.h irqreturn_t cobalt_irq_handler(int irq, void *dev_id);