drivers/usb/storage/uas.c

File Facts

System

Linux kernel

Corpus path

drivers/usb/storage/uas.c

Extension

.c

Size

34851 bytes

Lines

1305

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/blkdev.h
• linux/slab.h
• linux/types.h
• linux/module.h
• linux/usb.h
• linux/usb_usual.h
• linux/usb/hcd.h
• linux/usb/storage.h
• linux/usb/uas.h
• scsi/scsi.h
• scsi/scsi_eh.h
• scsi/scsi_dbg.h
• scsi/scsi_devinfo.h
• scsi/scsi_cmnd.h
• scsi/scsi_device.h
• scsi/scsi_host.h
• scsi/scsi_tcq.h
• uas-detect.h
• scsiglue.h
• unusual_uas.h

Detected Declarations

• struct uas_dev_info
• struct uas_cmd_info
• function uas_do_work
• function uas_scan_work
• function uas_add_work
• function uas_zap_pending
• function uas_sense
• function uas_log_cmd_state
• function uas_free_unsubmitted_urbs
• function uas_try_complete
• function uas_xfer_data
• function uas_evaluate_response_iu
• function uas_stat_cmplt
• function uas_data_cmplt
• function uas_cmd_cmplt
• function uas_submit_sense_urb
• function uas_submit_urbs
• function uas_queuecommand_lck
• function DEF_SCSI_QCMD
• function uas_eh_host_reset_handler
• function uas_target_alloc
• function uas_sdev_init
• function uas_sdev_configure
• function uas_switch_interface
• function uas_configure_endpoints
• function uas_free_streams
• function uas_probe
• function uas_cmnd_list_empty
• function uas_wait_for_pending_cmnds
• function uas_pre_reset
• function uas_post_reset
• function uas_suspend
• function uas_resume
• function uas_reset_resume
• function uas_disconnect
• function uas_shutdown
• function uas_init
• function uas_exit
• module init uas_init

Annotated Snippet

module_init(uas_init);
module_exit(uas_exit);

MODULE_DESCRIPTION("USB Attached SCSI driver");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("USB_STORAGE");
MODULE_AUTHOR(
	"Hans de Goede <hdegoede@redhat.com>, Matthew Wilcox and Sarah Sharp");

Annotation

• Immediate include surface: `linux/blkdev.h`, `linux/slab.h`, `linux/types.h`, `linux/module.h`, `linux/usb.h`, `linux/usb_usual.h`, `linux/usb/hcd.h`, `linux/usb/storage.h`.
• Detected declarations: `struct uas_dev_info`, `struct uas_cmd_info`, `function uas_do_work`, `function uas_scan_work`, `function uas_add_work`, `function uas_zap_pending`, `function uas_sense`, `function uas_log_cmd_state`, `function uas_free_unsubmitted_urbs`, `function uas_try_complete`.
• 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.