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rtc: s3c: Don't print an error on probe deferral 

The clock and source clock looked up by the driver may not be available
just because the clock controller driver was not probed yet so printing
an error in this case is not correct and only adds confusion to users.

However, knowing that a driver's probe was deferred may be useful so it
can be printed as a debug information.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
hifive-unleashed-5.1
Javier Martinez Canillas 2016-03-14 22:38:38 -03:00 committed by Alexandre Belloni
parent 399221ccf4
commit ae6e00b4c0
1 changed files with 14 additions and 5 deletions
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19
drivers/rtc/rtc-s3c.c
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@ -501,18 +501,27 @@ static int s3c_rtc_probe(struct platform_device *pdev)
info->rtc_clk = devm_clk_get(&pdev->dev, "rtc");
if (IS_ERR(info->rtc_clk)) {
dev_err(&pdev->dev, "failed to find rtc clock\n");
return PTR_ERR(info->rtc_clk);
ret = PTR_ERR(info->rtc_clk);
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "failed to find rtc clock\n");
else
dev_dbg(&pdev->dev, "probe deferred due to missing rtc clk\n");
return ret;
}
clk_prepare_enable(info->rtc_clk);
if (info->data->needs_src_clk) {
info->rtc_src_clk = devm_clk_get(&pdev->dev, "rtc_src");
if (IS_ERR(info->rtc_src_clk)) {
dev_err(&pdev->dev,
"failed to find rtc source clock\n");
ret = PTR_ERR(info->rtc_src_clk);
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev,
"failed to find rtc source clock\n");
else
dev_dbg(&pdev->dev,
"probe deferred due to missing rtc src clk\n");
clk_disable_unprepare(info->rtc_clk);
return PTR_ERR(info->rtc_src_clk);
return ret;
}
clk_prepare_enable(info->rtc_src_clk);
}