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Commit 9d42e465 authored by Jingoo Han's avatar Jingoo Han Committed by Linus Torvalds
Browse files

rtc: rtc-at91sam9: use devm_*() functions 



Use devm_*() functions to make cleanup paths simpler.

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent fa11f7e7

drivers/rtc/rtc-at91sam9.c

+12 −22
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/ioctl.h>

#include <linux/slab.h>

#include <linux/platform_data/atmel.h>

#include <linux/io.h>



#include <mach/at91_rtt.h>

#include <mach/cpu.h>
@@ -309,7 +310,7 @@ static int at91_rtc_probe(struct platform_device *pdev) 
		return irq;

	}



	rtc = kzalloc(sizeof *rtc, GFP_KERNEL);

	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);

	if (!rtc)

		return -ENOMEM;
@@ -320,18 +321,19 @@ static int at91_rtc_probe(struct platform_device *pdev) 
		device_init_wakeup(&pdev->dev, 1);



	platform_set_drvdata(pdev, rtc);

	rtc->rtt = ioremap(r->start, resource_size(r));

	rtc->rtt = devm_ioremap(&pdev->dev, r->start, resource_size(r));

	if (!rtc->rtt) {

		dev_err(&pdev->dev, "failed to map registers, aborting.\n");

		ret = -ENOMEM;

		goto fail;

	}



	rtc->gpbr = ioremap(r_gpbr->start, resource_size(r_gpbr));

	rtc->gpbr = devm_ioremap(&pdev->dev, r_gpbr->start,

				resource_size(r_gpbr));

	if (!rtc->gpbr) {

		dev_err(&pdev->dev, "failed to map gpbr registers, aborting.\n");

		ret = -ENOMEM;

		goto fail_gpbr;

		goto fail;

	}



	mr = rtt_readl(rtc, MR);
@@ -346,20 +348,19 @@ static int at91_rtc_probe(struct platform_device *pdev) 
	mr &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);

	rtt_writel(rtc, MR, mr);



	rtc->rtcdev = rtc_device_register(pdev->name, &pdev->dev,

	rtc->rtcdev = devm_rtc_device_register(&pdev->dev, pdev->name,

					&at91_rtc_ops, THIS_MODULE);

	if (IS_ERR(rtc->rtcdev)) {

		ret = PTR_ERR(rtc->rtcdev);

		goto fail_register;

		goto fail;

	}



	/* register irq handler after we know what name we'll use */

	ret = request_irq(rtc->irq, at91_rtc_interrupt, IRQF_SHARED,

				dev_name(&rtc->rtcdev->dev), rtc);

	ret = devm_request_irq(&pdev->dev, rtc->irq, at91_rtc_interrupt,

				IRQF_SHARED, dev_name(&rtc->rtcdev->dev), rtc);

	if (ret) {

		dev_dbg(&pdev->dev, "can't share IRQ %d?\n", rtc->irq);

		rtc_device_unregister(rtc->rtcdev);

		goto fail_register;

		goto fail;

	}



	/* NOTE:  sam9260 rev A silicon has a ROM bug which resets the
@@ -374,13 +375,8 @@ static int at91_rtc_probe(struct platform_device *pdev) 


	return 0;



fail_register:

	iounmap(rtc->gpbr);

fail_gpbr:

	iounmap(rtc->rtt);

fail:

	platform_set_drvdata(pdev, NULL);

	kfree(rtc);

	return ret;

}
@@ -394,14 +390,8 @@ static int at91_rtc_remove(struct platform_device *pdev) 


	/* disable all interrupts */

	rtt_writel(rtc, MR, mr & ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN));

	free_irq(rtc->irq, rtc);



	rtc_device_unregister(rtc->rtcdev);



	iounmap(rtc->gpbr);

	iounmap(rtc->rtt);

	platform_set_drvdata(pdev, NULL);

	kfree(rtc);

	return 0;

}