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)

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 (* startup) (unsigned int irq);
	 void (* shutdown) (unsigned int irq);
	 void (* enable) (unsigned int irq);
	 void (* disable) (unsigned int irq);
	 void (* ack) (unsigned int irq);
	 void (* mask) (unsigned int irq);
	 void (* mask_ack) (unsigned int irq);
	 void (* unmask) (unsigned int irq);
	 void (* eoi) (unsigned int irq);
	 void (* end) (unsigned int irq);
	 int (* set_affinity) (unsigned int irq,const struct cpumask *dest);
	 int (* retrigger) (unsigned int irq);
	 int (* set_type) (unsigned int irq, unsigned int flow_type);
	 int (* set_wake) (unsigned int irq, unsigned int on);
	 void (* bus_lock) (unsigned int irq);
	 void (* bus_sync_unlock) (unsigned int irq);
       #ifdef CONFIG_IRQ_RELEASE_METHOD
	 void (* release) (unsigned int irq, void *dev_id);
       #endif
	 const char * typename;
       };

MEMBERS

       name
	   name for /proc/interrupts

       startup
	   start up the interrupt (defaults to ->enable if NULL)

       shutdown
	   shut down the interrupt (defaults to ->disable if NULL)

       enable
	   enable the interrupt (defaults to chip->unmask if NULL)

       disable
	   disable the interrupt

       ack
	   start of a new interrupt

       mask
	   mask an interrupt source

       mask_ack
	   ack and mask an interrupt source

       unmask
	   unmask an interrupt source

       eoi
	   end of interrupt - chip level

       end
	   end of interrupt - flow level

       set_affinity
	   set the CPU affinity on SMP machines

       retrigger
	   resend an IRQ to the CPU

       set_type
	   set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ

       set_wake
	   enable/disable power-management wake-on of an IRQ

       bus_lock
	   function to lock access to slow bus (i2c) chips

       bus_sync_unlock
	   function to sync and unlock slow bus (i2c) chips

       release
	   release function solely used by UML

       typename
	   obsoleted by name, kept as migration helper

AUTHORS

       Thomas Gleixner <tglx@linutronix.de>
	   Author.

       Ingo Molnar <mingo@elte.hu>
	   Author.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							STRUCT IRQ_CHIP(9)