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.\"     Title: mpt_interrupt
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Message-based devices
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "MPT_INTERRUPT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Message-based devices"
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.SH "NAME"
mpt_interrupt \- MPT adapter (IOC) specific interrupt handler\&.
.SH "SYNOPSIS"
.HP \w'irqreturn_t\ mpt_interrupt('u
.BI "irqreturn_t mpt_interrupt(int\ " "irq" ", void\ *\ " "bus_id" ");"
.SH "ARGUMENTS"
.PP
\fIirq\fR
.RS 4
irq number (not used)
.RE
.PP
\fIbus_id\fR
.RS 4
bus identifier cookie == pointer to MPT_ADAPTER structure
.RE
.SH "DESCRIPTION"
.PP
This routine is registered via the
\fBrequest_irq\fR
kernel API call, and handles all interrupts generated from a specific MPT adapter (also referred to as a IO Controller or IOC)\&. This routine must clear the interrupt from the adapter and does so by reading the reply FIFO\&. Multiple replies may be processed per single call to this routine\&.
.PP
This routine handles register\-level access of the adapter but dispatches (calls) a protocol\-specific callback routine to handle the protocol\-specific details of the MPT request completion\&.
.SH "COPYRIGHT"
.br