linux-kernel - [PATCH v3 16/18] iio: magnetometer: ak8974: Simplify with dev_err

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Date:   Sat, 29 Aug 2020 08:47:24 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Peter Rosin <peda@...ntia.se>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Tomasz Duszynski <tomasz.duszynski@...akon.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH v3 16/18] iio: magnetometer: ak8974: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Acked-by: Linus Walleij <linus.walleij@...aro.org>

---

Changes since v1:
1. Wrap dev_err_probe() lines at 100 character
---
 drivers/iio/magnetometer/ak8974.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
index cbb44e401c0a..548c686e29d6 100644
--- a/drivers/iio/magnetometer/ak8974.c
+++ b/drivers/iio/magnetometer/ak8974.c
@@ -843,15 +843,8 @@ static int ak8974_probe(struct i2c_client *i2c,
 	ret = devm_regulator_bulk_get(&i2c->dev,
 				      ARRAY_SIZE(ak8974->regs),
 				      ak8974->regs);
-	if (ret < 0) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(&i2c->dev, "cannot get regulators: %d\n", ret);
-		else
-			dev_dbg(&i2c->dev,
-				"regulators unavailable, deferring probe\n");
-
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(&i2c->dev, ret, "cannot get regulators\n");
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(ak8974->regs), ak8974->regs);
 	if (ret < 0) {
-- 
2.17.1