From: Amelie Delaunay <amelie.delaunay@foss.st.com>
To: James Hilliard <james.hilliard1@gmail.com>,
Sean Wang <sean.wang@mediatek.com>, Vinod Koul <vkoul@kernel.org>,
Frank Li <Frank.Li@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Basavaraj Natikar <Basavaraj.Natikar@amd.com>,
Jacky Huang <ychuang3@nuvoton.com>,
Shan-Chun Hung <schung@nuvoton.com>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
"Scott Branden" <sbranden@broadcom.com>,
Lars-Peter Clausen <lars@metafoo.de>,
Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>,
Zhou Wang <wangzhou1@hisilicon.com>,
Longfang Liu <liulongfang@huawei.com>,
"Andy Shevchenko" <andy@kernel.org>,
Keguang Zhang <keguang.zhang@gmail.com>,
"Binbin Zhou" <zhoubinbin@loongson.cn>,
Taichi Sugaya <sugaya.taichi@socionext.com>,
Takao Orito <orito.takao@socionext.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Laxman Dewangan <ldewangan@nvidia.com>,
Jon Hunter <jonathanh@nvidia.com>,
Thierry Reding <thierry.reding@kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
Kunihiko Hayashi <hayashi.kunihiko@socionext.com>,
"Masami Hiramatsu" <mhiramat@kernel.org>
Cc: <dmaengine@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<linux-rpi-kernel@lists.infradead.org>, <imx@lists.linux.dev>,
<linux-mips@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
Frank Li <Frank.li@oss.nxp.com>
Subject: Re: [PATCH v3 1/2] dmaengine: virt-dma: share the DMAengine synchronization callback
Date: Wed, 28 Oct 2026 16:18:42 +0100 [thread overview]
Message-ID: <df9709e5-9923-4657-8cd3-fb767cc1c628@foss.st.com> (raw)
In-Reply-To: <20261027-submit-mtk-uart-dma-synchronize-v1-v3-1-aad7a6b3c62e@gmail.com>
On 10/27/26 19:22, James Hilliard wrote:
> Several virt-dma drivers implement device_synchronize with a wrapper that
> only converts the DMA channel and calls vchan_synchronize(). Provide
> vchan_dma_synchronize() with the DMAengine callback signature so these
> drivers can assign it directly.
>
> Document the requirement to stop the channel and prevent new callbacks
> before synchronization, and the context in which the callback wait may
> run. Replace the equivalent wrappers in the existing drivers with the
> shared helper, preserving their callback-wait and descriptor-cleanup
> behavior.
>
> Suggested-by: Frank Li<Frank.li@oss.nxp.com>
> Signed-off-by: James Hilliard<james.hilliard1@gmail.com>
> ---
> drivers/dma/stm32/stm32-dma.c | 9 +--------
> drivers/dma/stm32/stm32-dma3.c | 9 +--------
> drivers/dma/stm32/stm32-mdma.c | 9 +--------
> drivers/dma/virt-dma.h | 15 +++++++++++++++
Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com> # stm32, virt-dma
Regards,
Amelie
next prev parent reply other threads:[~2026-10-28 15:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-27 18:22 [PATCH v3 0/2] dmaengine: share virt-dma synchronization and use it for UART APDMA James Hilliard
2026-10-27 18:22 ` [PATCH v3 1/2] dmaengine: virt-dma: share the DMAengine synchronization callback James Hilliard
2026-10-27 20:00 ` Frank Li
2026-10-28 8:04 ` Andy Shevchenko
2026-10-28 15:18 ` Amelie Delaunay [this message]
2026-10-27 18:22 ` [PATCH v3 2/2] dmaengine: mediatek: uart: synchronize completion callbacks James Hilliard
2026-10-27 20:01 ` Frank Li
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