From 2de8c02349f02d014e51b43f306d28fc7a23ea6e Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Sat, 18 Apr 2020 20:12:44 +0300 Subject: [PATCH] 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 Signed-off-by: Jonathan Cameron --- 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 fc7e910f8e8b..d6d5087275ef 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; }