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rtc: mc13xxx: request IRQs after RTC registration 

Interrupts can appear after request_irq and interrupt handlers can use
the RTC device, but currently we register RTC after IRQs.  This patch
changes this order and simplify error path a bit.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexander Shiyan 2014-04-03 14:49:57 -07:00 committed by Linus Torvalds
parent 77bf2ea8de
commit 589e501439
1 changed files with 11 additions and 21 deletions
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32
drivers/rtc/rtc-mc13xxx.c
View File

@ -325,6 +325,11 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
priv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&mc13xxx_rtc_ops, THIS_MODULE);
if (IS_ERR(priv->rtc))
return PTR_ERR(priv->rtc);
mc13xxx_lock(mc13xxx);
ret = mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_RTCRST,
@ -342,35 +347,20 @@ static int __init mc13xxx_rtc_probe(struct platform_device *pdev)
ret = mc13xxx_irq_request_nounmask(mc13xxx, MC13XXX_IRQ_1HZ,
mc13xxx_rtc_update_handler, DRIVER_NAME, priv);
if (ret)
goto err_update_irq_request;
goto err_reset_irq_status;
ret = mc13xxx_irq_request_nounmask(mc13xxx, MC13XXX_IRQ_TODA,
mc13xxx_rtc_alarm_handler, DRIVER_NAME, priv);
if (ret)
goto err_alarm_irq_request;
if (!ret)
goto err_reset_irq_request;
mc13xxx_unlock(mc13xxx);
priv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&mc13xxx_rtc_ops, THIS_MODULE);
if (IS_ERR(priv->rtc)) {
ret = PTR_ERR(priv->rtc);
mc13xxx_lock(mc13xxx);
mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_TODA, priv);
err_alarm_irq_request:
mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_1HZ, priv);
err_update_irq_request:
mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_1HZ, priv);
err_reset_irq_status:
mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv);
mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv);
err_reset_irq_request:
mc13xxx_unlock(mc13xxx);
}
mc13xxx_unlock(mc13xxx);
return ret;
}