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iio: multiplexer: Switch to use dev_err_probe() helper 

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs. It's more simple in error path.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927064841.319291-1-yangyingliang@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Yang Yingliang 2022-09-27 14:48:41 +08:00 committed by Jonathan Cameron
parent 85e2c6a23f
commit 55e00b871c
1 changed files with 3 additions and 5 deletions
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8
drivers/iio/multiplexer/iio-mux.c
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@ -416,11 +416,9 @@ static int mux_probe(struct platform_device *pdev)
}
mux->control = devm_mux_control_get(dev, NULL);
if (IS_ERR(mux->control)) {
if (PTR_ERR(mux->control) != -EPROBE_DEFER)
dev_err(dev, "failed to get control-mux\n");
return PTR_ERR(mux->control);
}
if (IS_ERR(mux->control))
return dev_err_probe(dev, PTR_ERR(mux->control),
"failed to get control-mux\n");
i = 0;
for (state = 0; state < all_children; state++) {