linux-kernel - [PATCH v3 19/33] drm/mediatek: mtk_hdmi: Use dev_err_probe() in mtk_hdmi_dt_parse

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Message-ID: <20241217154345.276919-20-angelogioacchino.delregno@collabora.com>
Date: Tue, 17 Dec 2024 16:43:31 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: chunkuang.hu@...nel.org
Cc: p.zabel@...gutronix.de,
	airlied@...il.com,
	simona@...ll.ch,
	maarten.lankhorst@...ux.intel.com,
	mripard@...nel.org,
	tzimmermann@...e.de,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.com,
	ck.hu@...iatek.com,
	jitao.shi@...iatek.com,
	jie.qiu@...iatek.com,
	junzhi.zhao@...iatek.com,
	dri-devel@...ts.freedesktop.org,
	linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com,
	dmitry.baryshkov@...aro.org
Subject: [PATCH v3 19/33] drm/mediatek: mtk_hdmi: Use dev_err_probe() in mtk_hdmi_dt_parse_pdata()

Change error prints to use dev_err_probe() instead of dev_err()
where possible in function mtk_hdmi_dt_parse_pdata(), used only
during device probe.
While at it, also beautify some prints.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/gpu/drm/mediatek/mtk_hdmi.c | 34 ++++++++++-------------------
 1 file changed, 11 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index eb38f4b7674e..c20d42ec387a 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1372,30 +1372,23 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	struct device_node *cec_np, *remote, *i2c_np;
+	struct device_node *remote, *i2c_np;
 	struct platform_device *cec_pdev;
 	struct regmap *regmap;
 	int ret;
 
 	ret = mtk_hdmi_get_all_clk(hdmi, np);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get clocks: %d\n", ret);
-
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get clocks\n");
 
 	/* The CEC module handles HDMI hotplug detection */
 	cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
-	if (!cec_np) {
-		dev_err(dev, "Failed to find CEC node\n");
-		return -EINVAL;
-	}
+	if (!cec_np)
+		return dev_err_probe(dev, -EINVAL, "Failed to find CEC node\n");
 
 	cec_pdev = of_find_device_by_node(cec_np);
 	if (!cec_pdev) {
-		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
-			cec_np);
+		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n", cec_np);
 		of_node_put(cec_np);
 		return -EPROBE_DEFER;
 	}
@@ -1413,9 +1406,8 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	if (IS_ERR(regmap))
 		ret = PTR_ERR(regmap);
 	if (ret) {
-		dev_err(dev,
-			"Failed to get system configuration registers: %d\n",
-			ret);
+		dev_err_probe(dev, ret,
+			      "Failed to get system configuration registers\n");
 		goto put_device;
 	}
 	hdmi->sys_regmap = regmap;
@@ -1443,20 +1435,16 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	}
 
 	i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
+	of_node_put(remote);
 	if (!i2c_np) {
-		dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n",
-			remote);
-		of_node_put(remote);
-		ret = -EINVAL;
+		ret = dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n");
 		goto put_device;
 	}
-	of_node_put(remote);
 
 	hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
 	of_node_put(i2c_np);
 	if (!hdmi->ddc_adpt) {
-		dev_err(dev, "Failed to get ddc i2c adapter by node\n");
-		ret = -EINVAL;
+		ret = dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n");
 		goto put_device;
 	}
 
-- 
2.47.0