drivers/net/wireless/mediatek/mt76/mt7996/coredump.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/mediatek/mt76/mt7996/coredump.c

Extension

.c

Size

6405 bytes

Lines

269

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: implementation source

Status

source 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.
• 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/devcoredump.h
• linux/kernel.h
• linux/types.h
• linux/utsname.h
• coredump.h

Detected Declarations

• function mt7996_coredump_get_mem_layout
• function mt7996_coredump_get_mem_size
• function mt7996_coredump_fw_state
• function mt7996_coredump_fw_stack
• function mt7996_coredump_submit
• function mt7996_coredump_register
• function mt7996_coredump_unregister

Annotated Snippet

if (!crash_data->memdump_buf) {
			vfree(crash_data);
			return -ENOMEM;
		}
	}

	return 0;
}

void mt7996_coredump_unregister(struct mt7996_dev *dev)
{
	if (dev->coredump.crash_data->memdump_buf) {
		vfree(dev->coredump.crash_data->memdump_buf);
		dev->coredump.crash_data->memdump_buf = NULL;
		dev->coredump.crash_data->memdump_buf_len = 0;
	}

	vfree(dev->coredump.crash_data);
	dev->coredump.crash_data = NULL;
}

Annotation

• Immediate include surface: `linux/devcoredump.h`, `linux/kernel.h`, `linux/types.h`, `linux/utsname.h`, `coredump.h`.
• Detected declarations: `function mt7996_coredump_get_mem_layout`, `function mt7996_coredump_get_mem_size`, `function mt7996_coredump_fw_state`, `function mt7996_coredump_fw_stack`, `function mt7996_coredump_submit`, `function mt7996_coredump_register`, `function mt7996_coredump_unregister`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source 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.