Documentation/ABI/testing/sysfs-class-led-trigger-usbport

File Facts

System

Linux kernel

Corpus path

Documentation/ABI/testing/sysfs-class-led-trigger-usbport

Extension

[no extension]

Size

468 bytes

Lines

14

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: Documentation

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

What:		/sys/class/leds/<led>/ports/<port>
Date:		September 2016
KernelVersion:	4.9
Contact:	linux-leds@vger.kernel.org
		linux-usb@vger.kernel.org
Description:
		Every dir entry represents a single USB port that can be
		selected for the USB port trigger. Selecting ports makes trigger
		observing them for any connected devices and lighting on LED if
		there are any.

		Echoing "1" value selects USB port. Echoing "0" unselects it.
		Current state can be also read.

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

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.