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rtc: s5m: signal the core when alarm are not available 

Clear the RTC_FEATURE_ALARM bit to signal to the core when alarms are not
available to ensure the alarm callbacks are never called and userspace is
aware alarms are not supported.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210804104133.5158-2-alexandre.belloni@bootlin.com
This commit is contained in:
Alexandre Belloni 2021-08-04 12:41:30 +02:00
parent dae68c6b96
commit 1ed4dba2bc
1 changed files with 11 additions and 16 deletions
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27
drivers/rtc/rtc-s5m.c
View File

@ -794,25 +794,20 @@ static int s5m_rtc_probe(struct platform_device *pdev)
info->rtc_dev->ops = &s5m_rtc_ops;
err = devm_rtc_register_device(info->rtc_dev);
if (err)
return err;
if (!info->irq) {
dev_info(&pdev->dev, "Alarm IRQ not available\n");
return 0;
clear_bit(RTC_FEATURE_ALARM, info->rtc_dev->features);
} else {
ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
s5m_rtc_alarm_irq, 0, "rtc-alarm0",
info);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
info->irq, ret);
return ret;
}
}
ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
s5m_rtc_alarm_irq, 0, "rtc-alarm0",
info);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
info->irq, ret);
return ret;
}
return 0;
return devm_rtc_register_device(info->rtc_dev);
}
#ifdef CONFIG_PM_SLEEP