From: Vinod Koul <vkoul@kernel.org>
To: Frank.Li@oss.nxp.com
Cc: "Eugen Hristev" <ehristev@kernel.org>,
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Subject: Re: [PATCH 1/1] iio: use dmaengine_get_dma_device() instead of chan->device->dev
Date: Fri, 18 Sep 2026 23:24:15 +0530 [thread overview]
Message-ID: <aq16x3gAOIslmNE4@parshuram> (raw)
In-Reply-To: <20260917203652.1279059-1-Frank.Li@oss.nxp.com>
On 17-09-26, 16:36, Frank.Li@oss.nxp.com wrote:
> From: Frank Li <Frank.Li@nxp.com>
>
> Replace direct dma_chan::device::dev access with the proper
> dmaengine_get_dma_device() accessor in IIO DMA consumers.
>
> chan->device->dev is not always the device used for DMA mapping.
> Some DMA engines support per-channel IOMMU mappings, so different
> channels may use different DMA devices. dmaengine_get_dma_device()
> returns the correct device for each channel.
>
> This also prepares for making the DMA engine provider data structures
> private. DMA consumers should not access DMA engine internals directly.
>
> Assisted-by: LLM
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
--
~Vinod
prev parent reply other threads:[~2026-09-18 17:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-17 20:36 Frank.Li
2026-09-18 6:47 ` Andy Shevchenko
2026-09-18 17:54 ` Vinod Koul [this message]
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