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([183.243.208.130]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-896c37e267csm4818608b3a.27.2026.10.13.02.19.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Oct 2026 02:19:08 -0700 (PDT) From: Baineng Shou To: Eugeniy.Paltsev@synopsys.com, vkoul@kernel.org Cc: Frank.Li@nxp.com, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Baineng Shou Subject: [PATCH v2] dmaengine: dw-axi-dmac: demote apb_regs warning to debug Date: Tue, 13 Oct 2026 17:18:40 +0800 Message-Id: <20261013091840.3962663-1-shoubaineng@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918101414.4104604-1-shoubaineng@gmail.com> References: <20260918101414.4104604-1-shoubaineng@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit dw_axi_dma_set_hw_channel() logs "apb_regs not initialized" at err level when apb_regs is absent. However, only Intel KeemBay ("intel,kmb-axi-dma") carries apb_regs; all other supported SoCs (snps,axi-dma-1.01a, sophgo,cv1800b, starfive,jh7110/jh8100) operate without it. For those, reaching this path during slave/cyclic prep and terminate is the normal no-op case, not an error, and the err log spams dmesg on every transfer. Demote it to dev_dbg to match the identical check in dw_axi_dma_set_byte_halfword(). Reviewed-by: Frank Li Signed-off-by: Baineng Shou --- Changes in v2: - Collect Reviewed-by from Frank Li. No functional changes. drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index bcefaff03b5c..d829b9af5491 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -574,7 +574,7 @@ static void dw_axi_dma_set_hw_channel(struct axi_dma_chan *chan, bool set) unsigned long reg_value, val; if (!chip->apb_regs) { - dev_err(chip->dev, "apb_regs not initialized\n"); + dev_dbg(chip->dev, "apb_regs not initialized\n"); return; } -- 2.34.1