Commit 2f7bd329 authored by Jiri Slaby (SUSE)'s avatar Jiri Slaby (SUSE) Committed by Thomas Gleixner
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Documentation: irq/concepts: Add commas and reflow 



For easier reading, it is always desired to add commas at some places in
text. Like before adverbs or after fronted sentences.

[ tglx: Fix up subject prefix ]

Signed-off-by: default avatarJiri Slaby (SUSE) <jirislaby@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250319092951.37667-54-jirislaby@kernel.org
parent 2272a78b

Documentation/core-api/irq/concepts.rst

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What is an IRQ?

===============



An IRQ is an interrupt request from a device.

Currently they can come in over a pin, or over a packet.

Several devices may be connected to the same pin thus

sharing an IRQ.

An IRQ is an interrupt request from a device. Currently, they can come

in over a pin, or over a packet. Several devices may be connected to

the same pin thus sharing an IRQ.



An IRQ number is a kernel identifier used to talk about a hardware

interrupt source.  Typically this is an index into the global irq_desc

array, but except for what linux/interrupt.h implements the details

interrupt source. Typically, this is an index into the global irq_desc

array, but except for what linux/interrupt.h implements, the details

are architecture specific.



An IRQ number is an enumeration of the possible interrupt sources on a

machine.  Typically what is enumerated is the number of input pins on

all of the interrupt controller in the system.  In the case of ISA

machine. Typically, what is enumerated is the number of input pins on

all of the interrupt controllers in the system. In the case of ISA,

what is enumerated are the 16 input pins on the two i8259 interrupt

controllers.