linux-kernel - [PATCH v3 2/9] i2c: mlxbf: Use dev_err

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Date:   Tue, 8 Aug 2023 09:29:47 +0800
From:   Liao Chang <liaochang1@...wei.com>
To:     <andi.shyti@...nel.org>, <florian.fainelli@...adcom.com>,
        <rjui@...adcom.com>, <sbranden@...adcom.com>,
        <bcm-kernel-feedback-list@...adcom.com>,
        <yangyicong@...ilicon.com>, <aisheng.dong@....com>,
        <shawnguo@...nel.org>, <s.hauer@...gutronix.de>,
        <kernel@...gutronix.de>, <festevam@...il.com>, <linux-imx@....com>,
        <kblaiech@...dia.com>, <asmaa@...dia.com>,
        <loic.poulain@...aro.org>, <rfoss@...nel.org>, <ardb@...nel.org>,
        <gcherian@...vell.com>
CC:     <linux-i2c@...r.kernel.org>,
        <linux-rpi-kernel@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>
Subject: [PATCH v3 2/9] i2c: mlxbf: Use dev_err_probe in probe function

Use the dev_err_probe function instead of dev_err in the probe function
so that the printed messge includes the return value and also handles
-EPROBE_DEFER nicely.

Reviewed-by: Andi Shyti <andi.shyti@...nel.org>
Signed-off-by: Liao Chang <liaochang1@...wei.com>
---
 drivers/i2c/busses/i2c-mlxbf.c | 50 ++++++++++++----------------------
 1 file changed, 17 insertions(+), 33 deletions(-)

diff --git a/drivers/i2c/busses/i2c-mlxbf.c b/drivers/i2c/busses/i2c-mlxbf.c
index ae66bdd1b737..5ee82016c805 100644
--- a/drivers/i2c/busses/i2c-mlxbf.c
+++ b/drivers/i2c/busses/i2c-mlxbf.c
@@ -2323,10 +2323,8 @@ static int mlxbf_i2c_probe(struct platform_device *pdev)
 
 		ret = mlxbf_i2c_init_resource(pdev, &priv->smbus,
 					      MLXBF_I2C_SMBUS_RES);
-		if (ret < 0) {
-			dev_err(dev, "Cannot fetch smbus resource info");
-			return ret;
-		}
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "Cannot fetch smbus resource info");
 
 		priv->timer->io = priv->smbus->io;
 		priv->mst->io = priv->smbus->io + MLXBF_I2C_MST_ADDR_OFFSET;
@@ -2334,39 +2332,29 @@ static int mlxbf_i2c_probe(struct platform_device *pdev)
 	} else {
 		ret = mlxbf_i2c_init_resource(pdev, &priv->timer,
 					      MLXBF_I2C_SMBUS_TIMER_RES);
-		if (ret < 0) {
-			dev_err(dev, "Cannot fetch timer resource info");
-			return ret;
-		}
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "Cannot fetch timer resource info");
 
 		ret = mlxbf_i2c_init_resource(pdev, &priv->mst,
 					      MLXBF_I2C_SMBUS_MST_RES);
-		if (ret < 0) {
-			dev_err(dev, "Cannot fetch master resource info");
-			return ret;
-		}
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "Cannot fetch master resource info");
 
 		ret = mlxbf_i2c_init_resource(pdev, &priv->slv,
 					      MLXBF_I2C_SMBUS_SLV_RES);
-		if (ret < 0) {
-			dev_err(dev, "Cannot fetch slave resource info");
-			return ret;
-		}
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "Cannot fetch slave resource info");
 	}
 
 	ret = mlxbf_i2c_init_resource(pdev, &priv->mst_cause,
 				      MLXBF_I2C_MST_CAUSE_RES);
-	if (ret < 0) {
-		dev_err(dev, "Cannot fetch cause master resource info");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Cannot fetch cause master resource info");
 
 	ret = mlxbf_i2c_init_resource(pdev, &priv->slv_cause,
 				      MLXBF_I2C_SLV_CAUSE_RES);
-	if (ret < 0) {
-		dev_err(dev, "Cannot fetch cause slave resource info");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Cannot fetch cause slave resource info");
 
 	adap = &priv->adap;
 	adap->owner = THIS_MODULE;
@@ -2397,11 +2385,9 @@ static int mlxbf_i2c_probe(struct platform_device *pdev)
 	 * does not really hurt, then keep the code as is.
 	 */
 	ret = mlxbf_i2c_init_master(pdev, priv);
-	if (ret < 0) {
-		dev_err(dev, "failed to initialize smbus master %d",
-			priv->bus);
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "failed to initialize smbus master %d",
+				     priv->bus);
 
 	mlxbf_i2c_init_timings(pdev, priv);
 
@@ -2413,10 +2399,8 @@ static int mlxbf_i2c_probe(struct platform_device *pdev)
 	ret = devm_request_irq(dev, irq, mlxbf_i2c_irq,
 			       IRQF_SHARED | IRQF_PROBE_SHARED,
 			       dev_name(dev), priv);
-	if (ret < 0) {
-		dev_err(dev, "Cannot get irq %d\n", irq);
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Cannot get irq %d\n", irq);
 
 	priv->irq = irq;
 
-- 
2.25.1