drivers/mtd/mtdcore.c

File Facts

System

Linux kernel

Corpus path

drivers/mtd/mtdcore.c

Extension

.c

Size

69302 bytes

Lines

2661

Domain

Driver Families

Bucket

drivers/mtd

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.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• 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/module.h
• linux/kernel.h
• linux/ptrace.h
• linux/seq_file.h
• linux/string.h
• linux/timer.h
• linux/major.h
• linux/fs.h
• linux/err.h
• linux/ioctl.h
• linux/init.h
• linux/of.h
• linux/proc_fs.h
• linux/idr.h
• linux/backing-dev.h
• linux/gfp.h
• linux/random.h
• linux/slab.h
• linux/reboot.h
• linux/leds.h
• linux/debugfs.h
• linux/nvmem-provider.h
• linux/root_dev.h
• linux/error-injection.h
• linux/mtd/mtd.h
• linux/mtd/partitions.h
• linux/mtd/concat.h
• mtdcore.h

Detected Declarations

• function mtd_cls_suspend
• function mtd_cls_resume
• function release
• function mtd_device_release
• function DEVICE_ATTR
• function mtd_flags_show
• function mtd_size_show
• function mtd_erasesize_show
• function mtd_writesize_show
• function mtd_subpagesize_show
• function mtd_oobsize_show
• function mtd_oobavail_show
• function mtd_numeraseregions_show
• function mtd_name_show
• function mtd_ecc_strength_show
• function mtd_bitflip_threshold_show
• function mtd_bitflip_threshold_store
• function mtd_ecc_step_size_show
• function mtd_corrected_bits_show
• function mtd_ecc_failures_show
• function mtd_bad_blocks_show
• function mtd_bbt_blocks_show
• function mtd_check_expert_analysis_mode
• function mtd_ooblayout_show
• function mtd_ooblayout_ecc_show
• function mtd_ooblayout_free_show
• function mtd_debugfs_populate
• function mtd_mmap_capabilities
• function mtd_reboot_notifier
• function mtd_wunit_to_pairing_info
• function mtd_pairing_info_to_wunit
• function mtd_pairing_groups
• function mtd_nvmem_reg_read
• function mtd_nvmem_add
• function mtd_check_of_node
• function add_mtd_device
• function del_mtd_device
• function mtd_set_dev_defaults
• function mtd_otp_size
• function mtd_nvmem_user_otp_reg_read
• function mtd_nvmem_fact_otp_reg_read
• function mtd_otp_nvmem_add
• function parsing
• function mtd_device_unregister
• function register_mtd_user
• function unregister_mtd_user
• function __get_mtd_device
• function mtd_for_each_device

Annotated Snippet

module_init(init_mtd);
module_exit(cleanup_mtd);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("Core MTD registration and access routines");

Annotation

• Immediate include surface: `linux/module.h`, `linux/kernel.h`, `linux/ptrace.h`, `linux/seq_file.h`, `linux/string.h`, `linux/timer.h`, `linux/major.h`, `linux/fs.h`.
• Detected declarations: `function mtd_cls_suspend`, `function mtd_cls_resume`, `function release`, `function mtd_device_release`, `function DEVICE_ATTR`, `function mtd_flags_show`, `function mtd_size_show`, `function mtd_erasesize_show`, `function mtd_writesize_show`, `function mtd_subpagesize_show`.
• Atlas domain: Driver Families / drivers/mtd.
• Implementation status: integration implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• 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.