drivers/misc/dummy-irq.c

File Facts

System

Linux kernel

Corpus path

drivers/misc/dummy-irq.c

Extension

.c

Size

1397 bytes

Lines

61

Domain

Driver Families

Bucket

drivers/misc

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

• linux/module.h
• linux/irq.h
• linux/interrupt.h

Detected Declarations

• function dummy_interrupt
• function dummy_irq_init
• function dummy_irq_exit
• module init dummy_irq_init

Annotated Snippet

module_init(dummy_irq_init);
module_exit(dummy_irq_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jiri Kosina");
module_param_hw(irq, uint, irq, 0444);
MODULE_PARM_DESC(irq, "The IRQ to register for");
MODULE_DESCRIPTION("Dummy IRQ handler driver");

Annotation

• Immediate include surface: `linux/module.h`, `linux/irq.h`, `linux/interrupt.h`.
• Detected declarations: `function dummy_interrupt`, `function dummy_irq_init`, `function dummy_irq_exit`, `module init dummy_irq_init`.
• Atlas domain: Driver Families / drivers/misc.
• Implementation status: integration implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.