diff options
| author | Daniel Pawlik <pawlik.dan@gmail.com> | 2026-08-20 10:59:40 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-08-27 08:36:47 -0700 |
| commit | 6fe7e31a45e3418a39e6343a85126124feec1c2f (patch) | |
| tree | 4e4488ea046ed2d0f089e08d5ef16c3e5c8956de | |
| parent | 81eb1867e059bf1dbbfbba536385a5cb26f700cd (diff) | |
net: airoha: npu: fix missing streaming DMA mask
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.
Fixes: 6f884eb87a79 ("net: airoha: Fix DMA direction for NPU mailbox buffer")
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260814110017.2795022-1-pawlik.dan@gmail.com/
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260809152813.585797-1-pawlik.dan@gmail.com/
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260805070851.2885888-1-pawlik.dan@gmail.com/
Signed-off-by: Daniel Pawlik <pawlik.dan@gmail.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260820085941.380401-1-pawlik.dan@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/airoha/airoha_npu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c index de75376db194..5bb4817a898d 100644 --- a/drivers/net/ethernet/airoha/airoha_npu.c +++ b/drivers/net/ethernet/airoha/airoha_npu.c @@ -768,7 +768,7 @@ static int airoha_npu_probe(struct platform_device *pdev) npu->irqs[i] = irq; } - err = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); + err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); if (err) return err; |