Thread (8 messages) 8 messages, 4 authors, 2026-08-27

Re: [PATCH v10 1/2] net: airoha: npu: fix missing streaming DMA mask

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-08-27 15:41:04
Also in: linux-arm-kernel, linux-mediatek

Hello:

This series was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Thu, 20 Aug 2026 10:59:40 +0200 you wrote:
The driver calls dma_set_coherent_mask() but never dma_set_mask(),
leaving the streaming DMA mask at the bus default. On the non-coherent
EN7581 platform (Cortex-A53), this causes the NPU mailbox to hang
after approximately 41 calls when using streaming DMA mappings.

Replace dma_set_coherent_mask() with dma_set_mask_and_coherent() to
set both the streaming and coherent DMA masks, matching standard
driver practice.

[...]
Here is the summary with links:
  - [v10,1/2] net: airoha: npu: fix missing streaming DMA mask
    https://git.kernel.org/netdev/net/c/6fe7e31a45e3
  - [v10,2/2] net: airoha: npu: use cacheline-sized buffers for mailbox DMA
    (no matching commit)

You are awesome, thank you!
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