From: Jakub Kicinski <kuba@kernel.org>
To: Daniel Pawlik <pawlik.dan@gmail.com>
Cc: netdev@vger.kernel.org, linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, lorenzo@kernel.org,
nbd@nbd.name, sean.wang@mediatek.com, Mark-MC.Lee@mediatek.com,
davem@davemloft.net, edumazet@google.com, pabeni@redhat.com,
andrew+netdev@lunn.ch, yangshiji66@outlook.com
Subject: Re: [PATCH v10 1/2] net: airoha: npu: fix missing streaming DMA mask
Date: Sat, 22 Aug 2026 12:27:27 -0700 [thread overview]
Message-ID: <20260822122727.4f437bb5@kernel.org> (raw)
In-Reply-To: <20260820085941.380401-1-pawlik.dan@gmail.com>
On Thu, 20 Aug 2026 10:59:40 +0200 Daniel Pawlik 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.
Can you confirm if patch 2 is still needed after this fix?
next prev parent reply other threads:[~2026-08-22 19:27 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-20 8:59 [PATCH v10 1/2] net: airoha: npu: fix missing streaming DMA mask Daniel Pawlik
2026-08-20 8:59 ` [PATCH v10 2/2] net: airoha: npu: use cacheline-sized buffers for mailbox DMA Daniel Pawlik
2026-09-30 16:19 ` Daniel Pawlik
2026-08-22 8:56 ` [PATCH v10 1/2] net: airoha: npu: fix missing streaming DMA mask Lorenzo Bianconi
2026-08-22 19:27 ` Jakub Kicinski [this message]
2026-08-23 10:41 ` Daniel Pawlik
2026-08-24 7:13 ` Lorenzo Bianconi
2026-08-27 15:38 ` Jakub Kicinski
2026-08-27 15:40 ` patchwork-bot+netdevbpf
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