linux-kernel - [PATCH] soc: imx: gpcv2: Use dev_err_probe() to simplify error handling

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Message-Id: <1597115082-20328-1-git-send-email-Anson.Huang@nxp.com>
Date:   Tue, 11 Aug 2020 11:04:42 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, daniel.baluta@....com, agx@...xcpu.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH] soc: imx: gpcv2: Use dev_err_probe() to simplify error handling

dev_err_probe() can reduce code size, uniform error handling and record the
defer probe reason etc., use it to simplify the code.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/soc/imx/gpcv2.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index 6cf8a7a..db7e7fc 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -487,22 +487,17 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
 
 	domain->regulator = devm_regulator_get_optional(domain->dev, "power");
 	if (IS_ERR(domain->regulator)) {
-		if (PTR_ERR(domain->regulator) != -ENODEV) {
-			if (PTR_ERR(domain->regulator) != -EPROBE_DEFER)
-				dev_err(domain->dev, "Failed to get domain's regulator\n");
-			return PTR_ERR(domain->regulator);
-		}
+		if (PTR_ERR(domain->regulator) != -ENODEV)
+			return dev_err_probe(domain->dev, PTR_ERR(domain->regulator),
+					     "Failed to get domain's regulator\n");
 	} else if (domain->voltage) {
 		regulator_set_voltage(domain->regulator,
 				      domain->voltage, domain->voltage);
 	}
 
 	ret = imx_pgc_get_clocks(domain);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(domain->dev, "Failed to get domain's clocks\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(domain->dev, ret, "Failed to get domain's clocks\n");
 
 	ret = pm_genpd_init(&domain->genpd, NULL, true);
 	if (ret) {
-- 
2.7.4