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Message-Id: <20200418171244.2320-1-digetx@gmail.com>
Date: Sat, 18 Apr 2020 20:12:44 +0300
From: Dmitry Osipenko <digetx@...il.com>
To: Linus Walleij <linus.walleij@...aro.org>,
Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Andy Shevchenko <andy.shevchenko@...il.com>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3] 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@...il.com>
---
Changelog:
v3: - Replaced dev_info() with dev_dbg().
v2: - Replaced dev_printk() with dev_info() for the deferred-probe error,
as was requested by Linus Walleij in a review comment to v1.
drivers/iio/magnetometer/ak8974.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
index d32996702110..372c80c25dd4 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;
}
--
2.26.0
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