linux-kernel - [PATCH V4 4/5] iio: adc: Update error checks and debug prints

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Date:   Wed, 13 May 2020 14:52:15 +0530
From:   Jishnu Prakash <jprakash@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mka@...omium.org, linus.walleij@...aro.org,
        Jonathan.Cameron@...wei.com, andy.shevchenko@...il.com,
        amit.kucheria@...durent.com, smohanad@...eaurora.org,
        kgunda@...eaurora.org, aghayal@...eaurora.org,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-arm-msm@...r.kernel.org, linux-iio@...r.kernel.org
Cc:     linux-arm-msm-owner@...r.kernel.org,
        Jishnu Prakash <jprakash@...eaurora.org>
Subject: [PATCH V4 4/5] iio: adc: Update error checks and debug prints

Change pr_err/pr_debug statements to dev_err/dev_dbg for
increased clarity. Also clean up some return value checks.

Signed-off-by: Jishnu Prakash <jprakash@...eaurora.org>
---
 drivers/iio/adc/qcom-spmi-adc5.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c
index 6d6b611..974073f 100644
--- a/drivers/iio/adc/qcom-spmi-adc5.c
+++ b/drivers/iio/adc/qcom-spmi-adc5.c
@@ -249,11 +249,11 @@ static int adc5_read_voltage_data(struct adc5_chip *adc, u16 *data)
 	*data = (rslt_msb << 8) | rslt_lsb;
 
 	if (*data == ADC5_USR_DATA_CHECK) {
-		pr_err("Invalid data:0x%x\n", *data);
+		dev_err(adc->dev, "Invalid data:0x%x\n", *data);
 		return -EINVAL;
 	}
 
-	pr_debug("voltage raw code:0x%x\n", *data);
+	dev_dbg(adc->dev, "voltage raw code:0x%x\n", *data);
 
 	return 0;
 }
@@ -304,7 +304,7 @@ static int adc5_configure(struct adc5_chip *adc,
 
 	/* Read registers 0x42 through 0x46 */
 	ret = adc5_read(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
-	if (ret < 0)
+	if (ret)
 		return ret;
 
 	/* Digital param selection */
@@ -344,7 +344,7 @@ static int adc7_configure(struct adc5_chip *adc,
 		return ret;
 
 	ret = adc5_read(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
-	if (ret < 0)
+	if (ret)
 		return ret;
 
 	/* Digital param selection */
@@ -385,24 +385,24 @@ static int adc5_do_conversion(struct adc5_chip *adc,
 
 	ret = adc5_configure(adc, prop);
 	if (ret) {
-		pr_err("ADC configure failed with %d\n", ret);
+		dev_err(adc->dev, "ADC configure failed with %d\n", ret);
 		goto unlock;
 	}
 
 	if (adc->poll_eoc) {
 		ret = adc5_poll_wait_eoc(adc);
 		if (ret < 0) {
-			pr_err("EOC bit not set\n");
+			dev_err(adc->dev, "EOC bit not set\n");
 			goto unlock;
 		}
 	} else {
 		ret = wait_for_completion_timeout(&adc->complete,
 							ADC5_CONV_TIMEOUT);
 		if (!ret) {
-			pr_debug("Did not get completion timeout.\n");
+			dev_dbg(adc->dev, "Did not get completion timeout.\n");
 			ret = adc5_poll_wait_eoc(adc);
 			if (ret < 0) {
-				pr_err("EOC bit not set\n");
+				dev_err(adc->dev, "EOC bit not set\n");
 				goto unlock;
 			}
 		}
@@ -435,7 +435,7 @@ static int adc7_do_conversion(struct adc5_chip *adc,
 	wait_for_completion_timeout(&adc->complete, ADC7_CONV_TIMEOUT);
 
 	ret = adc5_read(adc, ADC5_USR_STATUS1, &status, 1);
-	if (ret < 0)
+	if (ret)
 		goto unlock;
 
 	if (status & ADC5_USR_STATUS1_CONV_FAULT) {
@@ -481,8 +481,8 @@ static int adc7_of_xlate(struct iio_dev *indio_dev,
 	int i, v_channel;
 
 	for (i = 0; i < adc->nchannels; i++) {
-		v_channel = (adc->chan_props[i].sid << ADC_CHANNEL_OFFSET |
-			adc->chan_props[i].channel);
+		v_channel = (adc->chan_props[i].sid << ADC_CHANNEL_OFFSET) |
+			adc->chan_props[i].channel;
 		if (v_channel == iiospec->args[0])
 			return i;
 	}
@@ -728,7 +728,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 	channel_name = of_get_property(node,
 				"label", NULL) ? : node->name;
 	if (!channel_name) {
-		pr_err("Invalid channel name\n");
+		dev_err(dev, "Invalid channel name\n");
 		return -EINVAL;
 	}
 	prop->datasheet_name = channel_name;
@@ -766,12 +766,12 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 
 		ret = adc5_read(adc, ADC5_USR_REVISION1, dig_version,
 							sizeof(dig_version));
-		if (ret < 0) {
+		if (ret) {
 			dev_err(dev, "Invalid dig version read %d\n", ret);
 			return ret;
 		}
 
-		pr_debug("dig_ver:minor:%d, major:%d\n", dig_version[0],
+		dev_dbg(dev, "dig_ver:minor:%d, major:%d\n", dig_version[0],
 						dig_version[1]);
 		/* Digital controller >= 5.3 have hw_settle_2 option */
 		if ((dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR &&
@@ -975,7 +975,7 @@ static int adc5_probe(struct platform_device *pdev)
 
 	ret = adc5_get_dt_data(adc, node);
 	if (ret) {
-		pr_err("adc get dt data failed\n");
+		dev_err(dev, "adc get dt data failed\n");
 		return ret;
 	}
 
-- 
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