linux-kernel - [PATCH 07/11] dmaengine: imx-sdma: make use of dev_err

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Message-Id: <20250903-v6-16-topic-sdma-v1-7-ac7bab629e8b@pengutronix.de>
Date: Wed, 03 Sep 2025 15:06:15 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: Vinod Koul <vkoul@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Jiada Wang <jiada_wang@...tor.com>
Cc: dmaengine@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Marco Felsch <m.felsch@...gutronix.de>
Subject: [PATCH 07/11] dmaengine: imx-sdma: make use of dev_err_probe()

Convert the probe function to dev_err_probe() which helps users to
identify issues better.

Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
---
 drivers/dma/imx-sdma.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index f6bb2f88a62781c0431336c365fa30c46f1401ad..e30dd46cf6522ee2aa4d3aca9868a01afbd29615 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -2255,7 +2255,7 @@ static int sdma_probe(struct platform_device *pdev)
 
 	ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
 	if (ret)
-		return ret;
+		return dev_err_probe(dev, ret, "Failed to set DMA mask\n");
 
 	sdma = devm_kzalloc(dev, sizeof(*sdma), GFP_KERNEL);
 	if (!sdma)
@@ -2272,24 +2272,24 @@ static int sdma_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return irq;
+		return dev_err_probe(dev, irq, "Failed to get IRQ\n");
 
 	sdma->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sdma->regs))
-		return PTR_ERR(sdma->regs);
+		return dev_err_probe(dev, PTR_ERR(sdma->regs), "ioremap failed\n");
 
 	sdma->clk_ipg = devm_clk_get_prepared(dev, "ipg");
 	if (IS_ERR(sdma->clk_ipg))
-		return PTR_ERR(sdma->clk_ipg);
+		return dev_err_probe(dev, PTR_ERR(sdma->clk_ipg), "IPG clk_get_prepared failed\n");
 
 	sdma->clk_ahb = devm_clk_get_prepared(dev, "ahb");
 	if (IS_ERR(sdma->clk_ahb))
-		return PTR_ERR(sdma->clk_ahb);
+		return dev_err_probe(dev, PTR_ERR(sdma->clk_ahb), "AHB clk_get_prepared failed\n");
 
 	ret = devm_request_irq(dev, irq, sdma_int_handler, 0,
 			       dev_name(dev), sdma);
 	if (ret)
-		return ret;
+		return dev_err_probe(dev, ret, "Failed to request IRQ\n");
 
 	sdma->irq = irq;
 
@@ -2330,11 +2330,11 @@ static int sdma_probe(struct platform_device *pdev)
 
 	ret = sdma_init(sdma);
 	if (ret)
-		return ret;
+		return dev_err_probe(dev, ret, "sdma_init failed\n");
 
 	ret = sdma_event_remap(sdma);
 	if (ret)
-		return ret;
+		return dev_err_probe(dev, ret, "sdma_event_remap failed\n");
 
 	if (sdma->drvdata->script_addrs)
 		sdma_add_scripts(sdma, sdma->drvdata->script_addrs);
@@ -2361,18 +2361,14 @@ static int sdma_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, sdma);
 
 	ret = dma_async_device_register(&sdma->dma_device);
-	if (ret) {
-		dev_err(dev, "unable to register\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "unable to register\n");
 
 	devm_add_action_or_reset(dev, sdma_dma_device_unregister_action, sdma);
 
 	ret = of_dma_controller_register(np, sdma_xlate, sdma);
-	if (ret) {
-		dev_err(dev, "failed to register controller\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to register controller\n");
 
 	spba_bus = of_find_compatible_node(NULL, NULL, "fsl,spba-bus");
 	ret = of_address_to_resource(spba_bus, 0, &spba_res);

-- 
2.47.2