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From:   Cai Huoqing <caihuoqing@baidu.com>
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Subject: [PATCH v4 2/9] iio: adc: imx7d_adc: Make use of the helper function dev_err_probe()
Date:   Fri, 8 Oct 2021 17:28:50 +0800
Message-ID: <20211008092858.495-2-caihuoqing@baidu.com>
In-Reply-To: <20211008092858.495-1-caihuoqing@baidu.com>
References: <20211008092858.495-1-caihuoqing@baidu.com>
MIME-Version: 1.0
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When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
---
v3->v4: Handle platform_get_irq() that returns -EPROBE_DEFER.

 drivers/iio/adc/imx7d_adc.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c
index 4969a5f941e3..d69d8b7d8456 100644
--- a/drivers/iio/adc/imx7d_adc.c
+++ b/drivers/iio/adc/imx7d_adc.c
@@ -493,22 +493,16 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return irq;
+		return dev_err_probe(dev, irq, "Failed getting irq\n");
 
 	info->clk = devm_clk_get(dev, "adc");
-	if (IS_ERR(info->clk)) {
-		ret = PTR_ERR(info->clk);
-		dev_err(dev, "Failed getting clock, err = %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(info->clk))
+		return dev_err_probe(dev, PTR_ERR(info->clk), "Failed getting clock\n");
 
 	info->vref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(info->vref)) {
-		ret = PTR_ERR(info->vref);
-		dev_err(dev,
-			"Failed getting reference voltage, err = %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(info->vref))
+		return dev_err_probe(dev, PTR_ERR(info->vref),
+				     "Failed getting reference voltage\n");
 
 	platform_set_drvdata(pdev, indio_dev);
 
-- 
2.25.1