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 <caihuoqing@xxxxxxxxx>
---
v3->v4: Add a dev_err_probe() message to the devm_gpiod_get_optional().
drivers/iio/adc/max1241.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/iio/adc/max1241.c b/drivers/iio/adc/max1241.c
index b60f8448f21a..a5afd84af58b 100644
--- a/drivers/iio/adc/max1241.c
+++ b/drivers/iio/adc/max1241.c
@@ -148,10 +148,9 @@ static int max1241_probe(struct spi_device *spi)
mutex_init(&adc->lock);
adc->vdd = devm_regulator_get(dev, "vdd");
- if (IS_ERR(adc->vdd)) {
- dev_err(dev, "failed to get vdd regulator\n");
- return PTR_ERR(adc->vdd);
- }
+ if (IS_ERR(adc->vdd))
+ return dev_err_probe(dev, PTR_ERR(adc->vdd),
+ "failed to get vdd regulator\n");
ret = regulator_enable(adc->vdd);
if (ret)
@@ -164,10 +163,9 @@ static int max1241_probe(struct spi_device *spi)
}
adc->vref = devm_regulator_get(dev, "vref");
- if (IS_ERR(adc->vref)) {
- dev_err(dev, "failed to get vref regulator\n");
- return PTR_ERR(adc->vref);
- }
+ if (IS_ERR(adc->vref))
+ return dev_err_probe(dev, PTR_ERR(adc->vref),
+ "failed to get vref regulator\n");
ret = regulator_enable(adc->vref);
if (ret)
@@ -182,7 +180,8 @@ static int max1241_probe(struct spi_device *spi)
adc->shutdown = devm_gpiod_get_optional(dev, "shutdown",
GPIOD_OUT_HIGH);
if (IS_ERR(adc->shutdown))
- return PTR_ERR(adc->shutdown);
+ return dev_err_probe(dev, PTR_ERR(adc->shutdown),
+ "cannot get shutdown gpio\n");
if (adc->shutdown)
dev_dbg(dev, "shutdown pin passed, low-power mode enabled");
--
2.25.1
