sound/ac97_bus.c

File Facts

System

Linux kernel

Corpus path

sound/ac97_bus.c

Extension

.c

Size

2663 bytes

Lines

101

Domain

Driver Families

Bucket

sound/ac97_bus.c

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/init.h
• linux/device.h
• linux/string.h
• sound/ac97_codec.h

Detected Declarations

• function snd_ac97_check_id
• function snd_ac97_reset
• function ac97_bus_init
• function ac97_bus_exit
• module init ac97_bus_init
• export snd_ac97_reset
• export ac97_bus_type

Annotated Snippet

const struct bus_type ac97_bus_type = {
	.name		= "ac97",
};
EXPORT_SYMBOL(ac97_bus_type);

static int __init ac97_bus_init(void)
{
	return bus_register(&ac97_bus_type);
}

subsys_initcall(ac97_bus_init);

static void __exit ac97_bus_exit(void)
{
	bus_unregister(&ac97_bus_type);
}

module_exit(ac97_bus_exit);

MODULE_DESCRIPTION("Legacy AC97 bus interface");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/device.h`, `linux/string.h`, `sound/ac97_codec.h`.
• Detected declarations: `function snd_ac97_check_id`, `function snd_ac97_reset`, `function ac97_bus_init`, `function ac97_bus_exit`, `module init ac97_bus_init`, `export snd_ac97_reset`, `export ac97_bus_type`.
• Atlas domain: Driver Families / sound/ac97_bus.c.
• Implementation status: pattern implementation candidate.

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.