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([2401:4900:54f0:3ab6:58b:9924:8921:710a]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-35badb90b8esm2529439a91.11.2026.03.17.03.49.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Mar 2026 03:49:46 -0700 (PDT) From: Rahul Navale To: Folker Schwesinger Cc: Rahul Navale , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, vkoul@kernel.org, Frank.Li@kernel.org, michal.simek@amd.com, suraj.gupta2@amd.com, thomas.gessler@brueckmann-gmbh.de, radhey.shyam.pandey@amd.com, tomi.valkeinen@ideasonboard.com, rahulnavale04@gmail.com, marex@nabladev.com, marex@denx.de Subject: Re: [RFC PATCH] dmaengine: xilinx_dma: Fix per-channel direction reporting via device_caps Date: Tue, 17 Mar 2026 16:19:32 +0530 Message-ID: <20260317104933.4846-1-rahulnavale04@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260317_034949_019310_1A6215EB X-CRM114-Status: UNSURE ( 9.70 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Rahul Navale Hi Folker, >Just to double check, and to make sure the regression you're seeing is >not a combination of any additional, yet unknown side-effects, could you >perform one more test? >In dmaengine_pcm_pointer() (the function we just patched), could you >replace the call to snd_dmaengine_pcm_pointer() with >snd_dmaengine_pcm_pointer_no_residue() while keeping 7e01511443c3 active >and test if this fixes your issue or not? I have performed the test (replace the call in dmaengine_pcm_pointer() function of provided patch) while keeping 7e01511443c3 active. I see issue is fixed audio is working with this. Hi Marek, >I came to the same conclusion, that the residue handling is broken in >the xilinx DMA driver for cyclic transfers, and the fix is below, with >two extra fixes in top: I have tested the provided patches the audio is not fixed with this.