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iio: light: cm3605: 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 <caihuoqing@baidu.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211008092656.421-1-caihuoqing@baidu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Cai Huoqing 2021-10-08 17:26:52 +08:00 committed by Jonathan Cameron
parent 42351035dc
commit 0d31d91e61
1 changed files with 15 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/iio/light/cm3605.c
View File

@ -159,6 +159,7 @@ static int cm3605_probe(struct platform_device *pdev)
struct device_node *np = dev->of_node;
enum iio_chan_type ch_type;
u32 rset;
int irq;
int ret;
indio_dev = devm_iio_device_alloc(dev, sizeof(*cm3605));
@ -195,12 +196,9 @@ static int cm3605_probe(struct platform_device *pdev)
cm3605->aout = devm_iio_channel_get(dev, "aout");
if (IS_ERR(cm3605->aout)) {
if (PTR_ERR(cm3605->aout) == -ENODEV) {
dev_err(dev, "no ADC, deferring...\n");
return -EPROBE_DEFER;
}
dev_err(dev, "failed to get AOUT ADC channel\n");
return PTR_ERR(cm3605->aout);
ret = PTR_ERR(cm3605->aout);
ret = (ret == -ENODEV) ? -EPROBE_DEFER : ret;
return dev_err_probe(dev, ret, "failed to get AOUT ADC channel\n");
}
ret = iio_get_channel_type(cm3605->aout, &ch_type);
if (ret < 0)
@ -211,10 +209,10 @@ static int cm3605_probe(struct platform_device *pdev)
}
cm3605->vdd = devm_regulator_get(dev, "vdd");
if (IS_ERR(cm3605->vdd)) {
dev_err(dev, "failed to get VDD regulator\n");
return PTR_ERR(cm3605->vdd);
}
if (IS_ERR(cm3605->vdd))
return dev_err_probe(dev, PTR_ERR(cm3605->vdd),
"failed to get VDD regulator\n");
ret = regulator_enable(cm3605->vdd);
if (ret) {
dev_err(dev, "failed to enable VDD regulator\n");
@ -223,13 +221,16 @@ static int cm3605_probe(struct platform_device *pdev)
cm3605->aset = devm_gpiod_get(dev, "aset", GPIOD_OUT_HIGH);
if (IS_ERR(cm3605->aset)) {
dev_err(dev, "no ASET GPIO\n");
ret = PTR_ERR(cm3605->aset);
ret = dev_err_probe(dev, PTR_ERR(cm3605->aset), "no ASET GPIO\n");
goto out_disable_vdd;
}
ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
cm3605_prox_irq, NULL, 0, "cm3605", indio_dev);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return dev_err_probe(dev, irq, "failed to get irq\n");
ret = devm_request_threaded_irq(dev, irq, cm3605_prox_irq,
NULL, 0, "cm3605", indio_dev);
if (ret) {
dev_err(dev, "unable to request IRQ\n");
goto out_disable_aset;