From: Logan Gunthorpe <logang@deltatee.com>
To: Ruizhe Zhou <zhouruizhe@resnics.com>,
Vinod Koul <vkoul@kernel.org>,
Basavaraj Natikar <Basavaraj.Natikar@amd.com>,
Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Frank Li <Frank.Li@kernel.org>,
Chunyan Zhang <zhang.lyra@gmail.com>,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] dmaengine: plx_dma: Remove obsolete 32-bit DMA mask fallback
Date: Thu, 3 Sep 2026 16:00:45 -0600 [thread overview]
Message-ID: <0ceac9d0-ed20-4387-bb82-472720d6b91a@deltatee.com> (raw)
In-Reply-To: <20260903115441.912500-3-zhouruizhe@resnics.com>
On 2026-09-03 5:54 a.m., Ruizhe Zhou wrote:
> The DMA API guarantees support for masks of 32 bits or wider and
> explicitly identifies retrying a 32-bit mask after a wider request as
> incorrect:
> https://docs.kernel.org/core-api/dma-api-howto.html#dma-addressing-capabilities
>
> Remove the obsolete fallback while retaining the error check so that a
> genuine DMA setup failure is still propagated and aborts initialization.
>
> Signed-off-by: Ruizhe Zhou <zhouruizhe@resnics.com>
Makes sense to me, thanks.
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
next prev parent reply other threads:[~2026-09-03 22:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-03 11:54 [PATCH 0/3] dmaengine: Remove obsolete 32-bit DMA mask fallbacks Ruizhe Zhou
2026-09-03 11:54 ` [PATCH 1/3] dmaengine: ptdma: Remove obsolete 32-bit DMA mask fallback Ruizhe Zhou
2026-09-03 19:26 ` Frank Li
2026-09-04 11:15 ` 周睿哲
2026-09-03 11:54 ` [PATCH 2/3] dmaengine: plx_dma: " Ruizhe Zhou
2026-09-03 14:29 ` sashiko-bot
2026-09-03 22:00 ` Logan Gunthorpe [this message]
2026-09-03 11:54 ` [PATCH 3/3] dmaengine: sprd: " Ruizhe Zhou
2026-09-03 14:26 ` sashiko-bot
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