Per merged PR #8 inline review: items 1 and 2 split, sequential. Patch C
is item-1-only (collapse the sdio_rx_work → rx_queue → bh_work
indirection). Patch C2 (ieee80211_rx_list batch delivery) is split out
and gated on Task #19 kerneldoc contract verification.
Approach choice: Option A (sdio_rx_work delivers directly into
wsm_handle_rx, removing rx_queue and its two synchronization points per
frame) over Option B (subsume into bh thread). Option A has a smaller
diff and clearer bisection story; the residual per-IRQ workqueue
dispatch is preserved as a measurable Phase 7 data point that motivates
or doesn't motivate a follow-on Option-B patch.
Predicted delta in Phase 3 units, with confidence levels stated
explicitly. §4.6 lists 6 risks, of which 2 require Phase 6 contract
citations (wsm_handle_rx callability from sdio_wq context;
wsm_release_tx_buffer's bh-wake invariant). §4.8 mandates a stress
ramp in Phase 7, not a steady cap, per feedback_phase7_stress_ramp.
Symptom-shaped findings (asm nop, commented-out IRQ re-enable, BUG_ON
in hot path) explicitly deferred to Task #24 per
feedback_dont_patch_downstream_artifacts.
Awaiting Phase 5 second-model review on DokuWiki.
