mbox series

[0/6] dmaengine: sun6i: fix interrupt routing and channel lifetime

Message ID 20261022-submit-sun6i-dma-lifetime-next-v1-v1-0-01085f684c9f@gmail.com (mailing list archive)
Headers
Series dmaengine: sun6i: fix interrupt routing and channel lifetime |

Message

James Hilliard Oct. 23, 2026, 3:14 a.m. UTC 
Correct interrupt routing and serialize physical-channel ownership across
allocation, completion, pause and termination. Keep paused virtual channels
off the allocator, drain completion callbacks before releasing resources,
and associate cyclic state with the descriptor that owns it.

The first patch carries Hongling Zeng's physical-channel indexing fix [0],
adapted to the configurable interrupt-bank size introduced for A733. The
second handles partially populated banks, including H3's twelve channels.
The remaining patches establish the ownership locking, pause bookkeeping,
callback retirement and per-descriptor cyclic state in that order.

Based on DMAengine next at aff5e6a77fc6, which includes A733 support, with
the posted IRQ-safe locking fix [1], channel pause-bit fix [2], and the
virt-dma synchronization helper from [3] applied first. The synchronization
patch uses that shared helper for the sun6i device_synchronize callback.

[0] https://lore.kernel.org/r/20260706064123.66035-1-zenghongling@kylinos.cn
[1] https://lore.kernel.org/r/20260926171049.841335-1-tien.nguyenminh@embeddedlinux.blog
[2] https://lore.kernel.org/r/20261021-submit-sun6i-dma-pause-bit-v1-v1-1-38d286b69dab@gmail.com
[3] https://lore.kernel.org/r/20261022-submit-mtk-uart-dma-synchronize-v1-v2-1-fdaef0e2edd6@gmail.com

Assisted-by: Codex:gpt-6-astra
Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
---
Hongling Zeng (1):
      dmaengine: sun6i: fix physical channel index in interrupt handler

James Hilliard (5):
      dmaengine: sun6i: handle the last partial interrupt bank
      dmaengine: sun6i: serialize channel reassignment with interrupt handling
      dmaengine: sun6i: track paused virtual channels
      dmaengine: sun6i: synchronize callbacks before releasing channel resources
      dmaengine: sun6i: keep cyclic state with the prepared descriptor

 drivers/dma/sun6i-dma.c | 153 ++++++++++++++++++++++++++++--------------------
 1 file changed, 89 insertions(+), 64 deletions(-)
---
base-commit: aff5e6a77fc69a7c490246465940d18422d7c631
change-id: 20261022-submit-sun6i-dma-lifetime-next-v1-53c3158f4841
prerequisite-patch-id: d6398447647aa0dbb005b5e6dc6ba96e642efa86
prerequisite-patch-id: f67c1f8d8d9e014cc650f2f37648662430c3b77b
prerequisite-patch-id: 8522878df4ecd4fb007cfd32611359e6eb58a1ef

Best regards,
--  
James Hilliard <james.hilliard1@gmail.com>