2021-09-27 08:33:52

by Cai,Huoqing

Subject: [PATCH 1/9] iio: adc: ab8500-gpadc: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <[email protected]>
---
drivers/iio/adc/ab8500-gpadc.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
index 7b5212ba5501..c58d0e2ae538 100644
--- a/drivers/iio/adc/ab8500-gpadc.c
+++ b/drivers/iio/adc/ab8500-gpadc.c
@@ -1146,11 +1146,10 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)

/* The VTVout LDO used to power the AB8500 GPADC */
gpadc->vddadc = devm_regulator_get(dev, "vddadc");
- if (IS_ERR(gpadc->vddadc)) {
- ret = PTR_ERR(gpadc->vddadc);
- dev_err(dev, "failed to get vddadc\n");
- return ret;
- }
+ if (IS_ERR(gpadc->vddadc))
+ return dev_err_probe(dev,
+ PTR_ERR(gpadc->vddadc),
+ "failed to get vddadc\n");

ret = regulator_enable(gpadc->vddadc);
if (ret) {
--
2.25.1

2021-09-27 08:36:31

by Cai,Huoqing

Subject: [PATCH 4/9] iio: adc: max1118: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <[email protected]>
---
drivers/iio/adc/max1118.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c
index 8cec9d949083..a41bc570be21 100644
--- a/drivers/iio/adc/max1118.c
+++ b/drivers/iio/adc/max1118.c
@@ -221,10 +221,9 @@ static int max1118_probe(struct spi_device *spi)

if (id->driver_data == max1118) {
adc->reg = devm_regulator_get(&spi->dev, "vref");
- if (IS_ERR(adc->reg)) {
- dev_err(&spi->dev, "failed to get vref regulator\n");
- return PTR_ERR(adc->reg);
- }
+ if (IS_ERR(adc->reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(adc->reg),
+ "failed to get vref regulator\n");
ret = regulator_enable(adc->reg);
if (ret)
return ret;
--
2.25.1