refactor(ramshared): linearize pci_remove teardown sequence

[emersonbusson]

Resumo

Linearized ramshared_pci_remove by validating rs_dev with a clear kernel error on missing data and performing strictly reversed teardown order: pci_set_drvdata, queues, DMA, master, regions, disable, and mutex destroy.

Commits

Commit	Files	Validation	Risk/rollback
f498320	Details drivers/block/ramshared/main.c	Details Verified structurally that C source compilation will match inverse sequence.	Details Risk: Low Rollback: Kernel panics on device remove or memory leak reports from KASAN.

Issue

Task: linearize pci_remove teardown sequence with guard checks

Owner

jules

Labels

type:refactor area:kernel-linux

Validacao

Visually validated C logic strictly respects reverse sequence requirement. Tested struct and pointer safety.

Rollback trigger

Kernel panics on device remove or memory leak reports from KASAN.

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PR created automatically by Jules for task 9252804470000937126 started by @emersonbusson

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[emersonbusson]

Closed in favor of PR #2085 consolidation.

[google-labs-jules]

Closed in favor of PR #2085 consolidation.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.