[PATCH v4 5/9] iio: adc: max1241: Make use of the helper function dev_err_probe()
From: Cai Huoqing <hidden>
Date: 2021-10-08 09:29:27
Also in:
linux-amlogic, linux-arm-msm, linux-iio, linux-rockchip, lkml
Subsystem:
iio subsystem and drivers, the rest · Maintainers:
Jonathan Cameron, Linus Torvalds
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 <redacted> --- 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
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