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[91.78.208.152]) by smtp.gmail.com with ESMTPSA id f21sm11063528lfk.94.2020.04.14.15.27.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Apr 2020 15:27:25 -0700 (PDT) From: Dmitry Osipenko To: Linus Walleij , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1] iio: magnetometer: ak8974: Silence deferred-probe error Date: Wed, 15 Apr 2020 01:27:13 +0300 Message-Id: <20200414222713.32660-1-digetx@gmail.com> X-Mailer: git-send-email 2.26.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It's not uncommon that voltage regulator becomes available later during kernel's boot process, in this case there is no need to print a noisy error message. This patch moves the message about unavailable regulator to the debug level in a case of the deferred-probe error and also amends the message with error code. Signed-off-by: Dmitry Osipenko --- 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..cc3861f97d42 100644 --- a/drivers/iio/magnetometer/ak8974.c +++ b/drivers/iio/magnetometer/ak8974.c @@ -718,6 +718,7 @@ static const struct regmap_config ak8974_regmap_config = { static int ak8974_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + const char *level = KERN_ERR; struct iio_dev *indio_dev; struct ak8974 *ak8974; unsigned long irq_trig; @@ -746,7 +747,11 @@ 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) + level = KERN_DEBUG; + + dev_printk(level, &i2c->dev, "cannot get regulators: %d\n", + ret); return ret; } -- 2.26.0