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pci_check_and_unmask_intx(9) [centos man page]

PCI_CHECK_AND_UNMASK(9) 					Hardware Interfaces					   PCI_CHECK_AND_UNMASK(9)

NAME
pci_check_and_unmask_intx - unmask INTx of no interrupt is pending SYNOPSIS
bool pci_check_and_unmask_intx(struct pci_dev * dev); ARGUMENTS
dev the PCI device to operate on DESCRIPTION
Check if the device dev has its INTx line asserted, unmask it if not and return true. False is returned and the mask remains active if there was still an interrupt pending. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 PCI_CHECK_AND_UNMASK(9)

Check Out this Related Man Page

STRUCT 
IRQ_CHIP(9) Structures STRUCT IRQ_CHIP(9) NAME
struct_irq_chip - hardware interrupt chip descriptor SYNOPSIS
struct irq_chip { const char * name; unsigned int (* irq_startup) (struct irq_data *data); void (* irq_shutdown) (struct irq_data *data); void (* irq_enable) (struct irq_data *data); void (* irq_disable) (struct irq_data *data); void (* irq_ack) (struct irq_data *data); void (* irq_mask) (struct irq_data *data); void (* irq_mask_ack) (struct irq_data *data); void (* irq_unmask) (struct irq_data *data); void (* irq_eoi) (struct irq_data *data); int (* irq_set_affinity) (struct irq_data *data, const struct cpumask *dest, bool force); int (* irq_retrigger) (struct irq_data *data); int (* irq_set_type) (struct irq_data *data, unsigned int flow_type); int (* irq_set_wake) (struct irq_data *data, unsigned int on); void (* irq_bus_lock) (struct irq_data *data); void (* irq_bus_sync_unlock) (struct irq_data *data); void (* irq_cpu_online) (struct irq_data *data); void (* irq_cpu_offline) (struct irq_data *data); void (* irq_suspend) (struct irq_data *data); void (* irq_resume) (struct irq_data *data); void (* irq_pm_shutdown) (struct irq_data *data); void (* irq_print_chip) (struct irq_data *data, struct seq_file *p); unsigned long flags; }; MEMBERS
name name for /proc/interrupts irq_startup start up the interrupt (defaults to ->enable if NULL) irq_shutdown shut down the interrupt (defaults to ->disable if NULL) irq_enable enable the interrupt (defaults to chip->unmask if NULL) irq_disable disable the interrupt irq_ack start of a new interrupt irq_mask mask an interrupt source irq_mask_ack ack and mask an interrupt source irq_unmask unmask an interrupt source irq_eoi end of interrupt irq_set_affinity set the CPU affinity on SMP machines irq_retrigger resend an IRQ to the CPU irq_set_type set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ irq_set_wake enable/disable power-management wake-on of an IRQ irq_bus_lock function to lock access to slow bus (i2c) chips irq_bus_sync_unlock function to sync and unlock slow bus (i2c) chips irq_cpu_online configure an interrupt source for a secondary CPU irq_cpu_offline un-configure an interrupt source for a secondary CPU irq_suspend function called from core code on suspend once per chip irq_resume function called from core code on resume once per chip irq_pm_shutdown function called from core code on shutdown once per chip irq_print_chip optional to print special chip info in show_interrupts flags chip specific flags AUTHORS
Thomas Gleixner <tglx@linutronix.de> Author. Ingo Molnar <mingo@elte.hu> Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT IRQ_CHIP(9)

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