From: Dmitry Osipenko <digetx@gmail.com>
Date: Sat, 18 Apr 2020 17:12:44 +0000 (+0300)
Subject: iio: magnetometer: ak8974: Silence deferred-probe error
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2de8c02349f02d014e51b43f306d28fc7a23ea6e;p=linux.git

iio: magnetometer: ak8974: Silence deferred-probe error

It's not uncommon that voltage regulator becomes available later during
kernel's boot process. This patch adds info message about unavailable
regulators in a case of the deferred-probe error and also amends the
error message with a error code.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
index fc7e910f8e8bf..d6d5087275efa 100644
--- a/drivers/iio/magnetometer/ak8974.c
+++ b/drivers/iio/magnetometer/ak8974.c
@@ -746,7 +746,12 @@ static int ak8974_probe(struct i2c_client *i2c,
 				      ARRAY_SIZE(ak8974->regs),
 				      ak8974->regs);
 	if (ret < 0) {
-		dev_err(&i2c->dev, "cannot get regulators\n");
+		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;
 	}