drivers/hwmon/drivetemp.c

File Facts

System

Linux kernel

Corpus path

drivers/hwmon/drivetemp.c

Extension

.c

Size

17139 bytes

Lines

620

Domain

Driver Families

Bucket

drivers/hwmon

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/ata.h
• linux/bits.h
• linux/device.h
• linux/hwmon.h
• linux/kernel.h
• linux/list.h
• linux/module.h
• scsi/scsi_cmnd.h
• scsi/scsi_device.h
• scsi/scsi_driver.h
• scsi/scsi_proto.h

Detected Declarations

• struct drivetemp_data
• function ata_id_smart_supported
• function ata_id_smart_enabled
• function drivetemp_scsi_command
• function drivetemp_ata_command
• function drivetemp_get_smarttemp
• function drivetemp_get_scttemp
• function drivetemp_sct_avoid
• function drivetemp_identify_sata
• function drivetemp_identify
• function drivetemp_read
• function drivetemp_is_visible
• function drivetemp_add
• function drivetemp_remove
• function list_for_each_entry_safe
• function drivetemp_init
• function drivetemp_exit
• module init drivetemp_init

Annotated Snippet

module_init(drivetemp_init);
module_exit(drivetemp_exit);

MODULE_AUTHOR("Guenter Roeck <linus@roeck-us.net>");
MODULE_DESCRIPTION("Hard drive temperature monitor");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:drivetemp");

Annotation

• Immediate include surface: `linux/ata.h`, `linux/bits.h`, `linux/device.h`, `linux/hwmon.h`, `linux/kernel.h`, `linux/list.h`, `linux/module.h`, `scsi/scsi_cmnd.h`.
• Detected declarations: `struct drivetemp_data`, `function ata_id_smart_supported`, `function ata_id_smart_enabled`, `function drivetemp_scsi_command`, `function drivetemp_ata_command`, `function drivetemp_get_smarttemp`, `function drivetemp_get_scttemp`, `function drivetemp_sct_avoid`, `function drivetemp_identify_sata`, `function drivetemp_identify`.
• Atlas domain: Driver Families / drivers/hwmon.
• 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.