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a="1780746" X-IronPort-AV: E=Sophos;i="6.27,182,1787036400"; d="scan'208";a="1780746" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Oct 2026 01:04:20 -0700 X-CSE-ConnectionGUID: 3U2XXT5qQFSCkgAuKxEChg== X-CSE-MsgGUID: XN/qcR2yR4S9jibXAKAjrg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,182,1787036400"; d="scan'208";a="4852263" Received: from abityuts-desk1.ger.corp.intel.com (HELO localhost) ([10.245.244.117]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Oct 2026 01:04:11 -0700 Date: Wed, 28 Oct 2026 10:04:08 +0200 From: Andy Shevchenko To: James Hilliard Cc: Sean Wang , Vinod Koul , Frank Li , Matthias Brugger , AngeloGioacchino Del Regno , Basavaraj Natikar , Jacky Huang , Shan-Chun Hung , Florian Fainelli , Broadcom internal kernel review list , Ray Jui , Scott Branden , Lars-Peter Clausen , Eugeniy Paltsev , Zhou Wang , Longfang Liu , Andy Shevchenko , Keguang Zhang , Binbin Zhou , Taichi Sugaya , Takao Orito , =?iso-8859-1?Q?Am=E9lie?= Delaunay , Maxime Coquelin , Alexandre Torgue , Laxman Dewangan , Jon Hunter , Thierry Reding , Vignesh Raghavendra , Kunihiko Hayashi , Masami Hiramatsu , 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 Subject: Re: [PATCH v3 1/2] dmaengine: virt-dma: share the DMAengine synchronization callback Message-ID: References: <20261027-submit-mtk-uart-dma-synchronize-v1-v3-0-aad7a6b3c62e@gmail.com> <20261027-submit-mtk-uart-dma-synchronize-v1-v3-1-aad7a6b3c62e@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261027-submit-mtk-uart-dma-synchronize-v1-v3-1-aad7a6b3c62e@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo 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 # hsu, idma64, virt-dma -- With Best Regards, Andy Shevchenko