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iio: dac: dpot-dac: Simplify with dev_err_probe()

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Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20200829064726.26268-12-krzk@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Krzysztof Kozlowski 2020-08-29 08:47:20 +02:00 committed by Jonathan Cameron
parent ed1759093c
commit a567abf66e
1 changed files with 6 additions and 10 deletions
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16
drivers/iio/dac/dpot-dac.c
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@ -183,18 +183,14 @@ static int dpot_dac_probe(struct platform_device *pdev)
indio_dev->num_channels = 1;
dac->vref = devm_regulator_get(dev, "vref");
if (IS_ERR(dac->vref)) {
if (PTR_ERR(dac->vref) != -EPROBE_DEFER)
dev_err(&pdev->dev, "failed to get vref regulator\n");
return PTR_ERR(dac->vref);
}
if (IS_ERR(dac->vref))
return dev_err_probe(&pdev->dev, PTR_ERR(dac->vref),
"failed to get vref regulator\n");
dac->dpot = devm_iio_channel_get(dev, "dpot");
if (IS_ERR(dac->dpot)) {
if (PTR_ERR(dac->dpot) != -EPROBE_DEFER)
dev_err(dev, "failed to get dpot input channel\n");
return PTR_ERR(dac->dpot);
}
if (IS_ERR(dac->dpot))
return dev_err_probe(&pdev->dev, PTR_ERR(dac->dpot),
"failed to get dpot input channel\n");
ret = iio_get_channel_type(dac->dpot, &type);
if (ret < 0)