From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: James Hilliard <james.hilliard1@gmail.com>
Cc: "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>,
"Amélie Delaunay" <amelie.delaunay@foss.st.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>,
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 10:04:08 +0200 [thread overview]
Message-ID: <auGseGw39K115Zfi@ashevche-desk.local> (raw)
In-Reply-To: <20261027-submit-mtk-uart-dma-synchronize-v1-v3-1-aad7a6b3c62e@gmail.com>
On Tue, Oct 27, 2026 at 12:22:26PM -0600, 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.
...
> drivers/dma/hsu/hsu.c | 9 +--------
> drivers/dma/idma64.c | 9 +--------
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com> # hsu, idma64, virt-dma
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-10-28 8:04 UTC|newest]
Thread overview: 6+ 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 [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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