drivers/usb/serial/ir-usb.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/serial/ir-usb.c

Extension

.c

Size

12028 bytes

Lines

488

Domain

Driver Families

Bucket

drivers/usb

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/kernel.h
• linux/errno.h
• linux/init.h
• linux/slab.h
• linux/tty.h
• linux/tty_driver.h
• linux/tty_flip.h
• linux/module.h
• linux/spinlock.h
• linux/uaccess.h
• linux/usb.h
• linux/usb/serial.h
• linux/usb/irda.h

Detected Declarations

• function irda_usb_dump_class_desc
• function irda_usb_find_class_desc
• function ir_xbof_change
• function ir_startup
• function ir_write
• function ir_write_bulk_callback
• function ir_write_room
• function ir_process_read_urb
• function ir_set_termios
• function ir_init
• function ir_exit
• module init ir_init

Annotated Snippet

module_init(ir_init);
module_exit(ir_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

module_param(xbof, int, 0);
MODULE_PARM_DESC(xbof, "Force specific number of XBOFs");
module_param(buffer_size, int, 0);
MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/errno.h`, `linux/init.h`, `linux/slab.h`, `linux/tty.h`, `linux/tty_driver.h`, `linux/tty_flip.h`, `linux/module.h`.
• Detected declarations: `function irda_usb_dump_class_desc`, `function irda_usb_find_class_desc`, `function ir_xbof_change`, `function ir_startup`, `function ir_write`, `function ir_write_bulk_callback`, `function ir_write_room`, `function ir_process_read_urb`, `function ir_set_termios`, `function ir_init`.
• Atlas domain: Driver Families / drivers/usb.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.