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drivers/rtc/rtc-at91rm9200.c: use devm_* APIs

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devm_* APIs are device managed and make code simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sachin Kamat 2013-11-12 15:10:29 -08:00 committed by Linus Torvalds
parent 58f27d7d06
commit f3766250b2
1 changed files with 7 additions and 21 deletions
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28
drivers/rtc/rtc-at91rm9200.c
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@ -376,7 +376,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
return -ENXIO;
}
at91_rtc_regs = ioremap(regs->start, resource_size(regs));
at91_rtc_regs = devm_ioremap(&pdev->dev, regs->start,
resource_size(regs));
if (!at91_rtc_regs) {
dev_err(&pdev->dev, "failed to map registers, aborting.\n");
return -ENOMEM;
@ -390,12 +391,12 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
AT91_RTC_SECEV | AT91_RTC_TIMEV |
AT91_RTC_CALEV);
ret = request_irq(irq, at91_rtc_interrupt,
ret = devm_request_irq(&pdev->dev, irq, at91_rtc_interrupt,
IRQF_SHARED,
"at91_rtc", pdev);
if (ret) {
dev_err(&pdev->dev, "IRQ %d already in use.\n", irq);
goto err_unmap;
return ret;
}
/* cpu init code should really have flagged this device as
@ -404,23 +405,14 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
if (!device_can_wakeup(&pdev->dev))
device_init_wakeup(&pdev->dev, 1);
rtc = rtc_device_register(pdev->name, &pdev->dev,
rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&at91_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
ret = PTR_ERR(rtc);
goto err_free_irq;
}
if (IS_ERR(rtc))
return PTR_ERR(rtc);
platform_set_drvdata(pdev, rtc);
dev_info(&pdev->dev, "AT91 Real Time Clock driver.\n");
return 0;
err_free_irq:
free_irq(irq, pdev);
err_unmap:
iounmap(at91_rtc_regs);
return ret;
}
/*
@ -428,16 +420,10 @@ err_unmap:
*/
static int __exit at91_rtc_remove(struct platform_device *pdev)
{
struct rtc_device *rtc = platform_get_drvdata(pdev);
/* Disable all interrupts */
at91_rtc_write_idr(AT91_RTC_ACKUPD | AT91_RTC_ALARM |
AT91_RTC_SECEV | AT91_RTC_TIMEV |
AT91_RTC_CALEV);
free_irq(irq, pdev);
rtc_device_unregister(rtc);
iounmap(at91_rtc_regs);
return 0;
}