[PATCH v2 3/8] iio: dac: ltc1660: Make use of the helper function dev_err_probe()

From: Cai Huoqing
Date: Mon Sep 27 2021 - 21:55:36 EST


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>
---
drivers/iio/dac/ltc1660.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/dac/ltc1660.c b/drivers/iio/dac/ltc1660.c
index dc10188540ca..f6ec9bf5815e 100644
--- a/drivers/iio/dac/ltc1660.c
+++ b/drivers/iio/dac/ltc1660.c
@@ -172,10 +172,9 @@ static int ltc1660_probe(struct spi_device *spi)
}

priv->vref_reg = devm_regulator_get(&spi->dev, "vref");
- if (IS_ERR(priv->vref_reg)) {
- dev_err(&spi->dev, "vref regulator not specified\n");
- return PTR_ERR(priv->vref_reg);
- }
+ if (IS_ERR(priv->vref_reg))
+ return dev_err_probe(&spi->dev, PTR_ERR(priv->vref_reg),
+ "vref regulator not specified\n");

ret = regulator_enable(priv->vref_reg);
if (ret) {
--
2.25.1