claude-noether
0f783a1e69
(1) Add `provides=("linux-pinetab2=$pkgver-$pkgrel")` and
`conflicts=(linux-pinetab2)` so pacman -U cleanly replaces the
upstream linux-pinetab2 package without needing --overwrite for the
shared rk3566-pinetab2-*.dtb files.
Verified end-to-end on ohm 2026-05-08: with these declarations
pacman would refuse coexistence (matching the actual filesystem
reality - both packages own the same DTB paths) and accept upgrade
when removing the old package.
Keeping `replaces=(wireguard-arch)` from upstream linux-pinetab2.
Not adding linux-pinetab2 to replaces= since the soft-upstream
intent is opt-in sidegrade, not auto-install on -Syu.
(2) Replace the bash for-loop DTB strip with find -delete.
The original loop silently no-op'd during the makepkg-fakeroot
package() phase: build verification of the published .pkg.tar.zst
showed 236 DTBs, 234 of them unrelated boards (px30-*, rk3308-*,
rk3328-*, rk3399-*, etc). Root cause not pinned down (suspected
nullglob or cwd interaction), but find -mindepth 1 -maxdepth 1
! -name 'rk3566-pinetab2-*' -delete is robust to that environment
and correctly identifies 2 to keep / 234 to remove on the existing
pkgdir.
Net pkg size impact: ~5 MB reduction (most non-pinetab2 DTBs are
20-40 KB).
No kernel rebuild required - PKGBUILD-only metadata + package() logic
change. Will take effect on the next makepkg run.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
linux-pinetab2-danctnix-besser
Soft-upstream fork of linux-pinetab2 (DanctNIX kernel for PineTab2) carrying the BESser bes2600 staging-driver patchset.
Drop-in replacement for linux-pinetab2. Same kernel version, same config, same modules — only the drivers/staging/bes2600/ driver differs.
What's in the patchset
A 16-commit cumulative diff over v7.0-danctnix1's in-tree drivers/staging/bes2600/, capturing:
| group | what it does |
|---|---|
| c-stack (Patches A, B, c5.1–c5.2.1, c6.1, c6.2, c7) | wifi-stability fixes: decrypt-storm fast-recover, connection-loss bus-reset, scan-defer-on-firmware-reject, PM state resync, firmware-doesn't-honour-PSM self-detect, multi-function SDIO mmc_hw_reset rescan |
| Patch F | cw1200 mainline backports: hw_scan SKB-lifecycle UAF, init_common destroy_workqueue on error, atomic_add(1, x) → atomic_inc(x) cosmetic |
| Patch C v3 | structural: drop sdio_rx_work workqueue relay; IRQ → bh-direct architecture (matches mainline cw1200) |
| Patch G | GPL-2.0 §1 attribution restoration: SPDX-License-Identifier on every file, Tarnyagin/ST-Ericsson Copyright restored on cw1200-derived files |
| Patch D | ba_lock removed; ba_acc/ba_cnt/ba_acc_rx/ba_cnt_rx/ba_ena converted to atomic_t; per-RX-frame spinlock eliminated |
| Patch E | per-RX-frame ps_state_lock skipped when c7's pm_unsupported latch is on (steady-state on production firmware) |
| Patch C2 | ieee80211_rx_irqsafe → ieee80211_rx_ni at all 6 sites (kernel.org-clean process-context API; tasklet hop removed) |
| Patch H | bh.c hygiene cleanup: 76-line + 468-line #if 0 cw1200-ancestor fossil blocks removed; __bes2600_irq_enable stub removed; per-iteration BUG_ON → WARN_ON_ONCE |
Measured outcome (Mobian-flavor verification, expected to carry over)
- Phase 7 N=3 stress @ 4 MB/s sender on RK3566/PineTab2:
- Patch B baseline: 1.36 MB/s
- Patch C v3 + F + G + D + E + C2 + H: 2.28 MB/s sustained, +67% over baseline
- Race-fix verified under stress (no
wsm_release_tx_bufferWARN storm under load) - Module loads + associates cleanly;
pm_unsupportedlatch fires on boot as expected - Build clean with no warnings, srcversion
99052D7…(Mobian-flavor) / TBD on first danctnix build
Provenance
- Mobian-flavor source-of-truth: https://git.reauktion.de/marfrit/bes2600-dkms (cleanups branch)
- Per-patch breakdown + Phase 7 results: https://git.reauktion.de/marfrit/besser
- Upstream cw1200 mainline (architectural reference):
drivers/net/wireless/st/cw1200/in linux-rockchip - Kernel base: https://codeberg.org/DanctNIX/linux-pinetab2 tag
v7.0-danctnix1
Why it's "BESser"
"Besser" = German for "better." Patch series ID across both DKMS (Mobian) and in-tree (Danctnix) trees. Single source-of-truth lives in marfrit/bes2600-dkms; this PKGBUILD is the danctnix-flavor consumption surface.
Building
makepkg -s
Identical workflow to upstream linux-pinetab2. Flash the resulting .pkg.tar.zst via pacman -U. Reboot to load.
Soft-upstream intent
Submitting this PKGBUILD to DanctNIX for review. If accepted as a replacement for linux-pinetab2 (or sidegrade), the BESser patchset ships to all PineTab2 users via the regular danctnix package update channel. The bes2600 driver gets:
- ~2× sustained RX throughput
- Race-correctness on the hot path
- GPL-2.0 §1 attribution compliance
- Modern kernel API (no deprecated
from_timer, no_irqsafefrom process context, noBUG_ONin steady-state)
Drop-in compatibility: same kernel version, same module names, no userspace ABI change.
Maintenance plan
- New danctnix kernel release → rebase BESser patch onto the new tag, regenerate cumulative diff, bump pkgver
- New BESser patch on Mobian DKMS → re-overlay + re-flavor + regenerate cumulative diff
- Both flavors continue to be maintained in lockstep via
marfrit/bes2600-dkmssource-of-truth
Known gaps
- Single cumulative diff (squashed 16 commits) for now. Per-patch series can be regenerated if danctnix maintainers prefer.
- Bluetooth-side
bes2600_btuartis independent and untouched by this patchset. bes2600_switch_btorchestration removed (Mobian-only entry point; not used in danctnix tree).
Author
Markus Fritsche fritsche.markus@gmail.com
Built collaboratively with Claude Opus 4.7 (1M context).