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mpt_hardresethandler(9) [centos man page]

MPT_HARDRESETHANDLER(9) 				       Message-based devices					   MPT_HARDRESETHANDLER(9)

NAME
mpt_HardResetHandler - Generic reset handler SYNOPSIS
int mpt_HardResetHandler(MPT_ADAPTER * ioc, int sleepFlag); ARGUMENTS
ioc Pointer to MPT_ADAPTER structure sleepFlag Indicates if sleep or schedule must be called. DESCRIPTION
Issues SCSI Task Management call based on input arg values. If TaskMgmt fails, returns associated SCSI request. REMARK
_HardResetHandler can be invoked from an interrupt thread (timer) or a non-interrupt thread. In the former, must not call schedule. NOTE
A return of -1 is a FATAL error case, as it means a FW reload/initialization failed. Returns 0 for SUCCESS or -1 if FAILED. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 MPT_HARDRESETHANDLER(9)

Check Out this Related Man Page

REQUEST_THREADED_IRQ(9) 					Hardware Interfaces					   REQUEST_THREADED_IRQ(9)

NAME
request_threaded_irq - allocate an interrupt line SYNOPSIS
int request_threaded_irq(unsigned int irq, irq_handler_t handler, irq_handler_t thread_fn, unsigned long irqflags, const char * devname, void * dev_id); ARGUMENTS
irq Interrupt line to allocate handler Function to be called when the IRQ occurs. Primary handler for threaded interrupts If NULL and thread_fn != NULL the default primary handler is installed thread_fn Function called from the irq handler thread If NULL, no irq thread is created irqflags Interrupt type flags devname An ascii name for the claiming device dev_id A cookie passed back to the handler function DESCRIPTION
This call allocates interrupt resources and enables the interrupt line and IRQ handling. From the point this call is made your handler function may be invoked. Since your handler function must clear any interrupt the board raises, you must take care both to initialise your hardware and to set up the interrupt handler in the right order. If you want to set up a threaded irq handler for your device then you need to supply handler and thread_fn. handler ist still called in hard interrupt context and has to check whether the interrupt originates from the device. If yes it needs to disable the interrupt on the device and return IRQ_WAKE_THREAD which will wake up the handler thread and run thread_fn. This split handler design is necessary to support shared interrupts. Dev_id must be globally unique. Normally the address of the device data structure is used as the cookie. Since the handler receives this value it makes sense to use it. If your interrupt is shared you must pass a non NULL dev_id as this is required when freeing the interrupt. FLAGS
IRQF_SHARED Interrupt is shared IRQF_DISABLED Disable local interrupts while processing IRQF_SAMPLE_RANDOM The interrupt can be used for entropy IRQF_TRIGGER_* Specify active edge(s) or level COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 REQUEST_THREADED_IRQ(9)

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