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drivers/rtc/rtc-omap.c: update to devm_* API

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Update the code to use devm_* API so that driver core will manage
resources.

Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com>
Tested-by: Sekhar Nori <nsekhar@ti.com>
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:
Vishwanathrao Badarkhe, Manish 2013-04-29 16:20:04 -07:00 committed by Linus Torvalds
parent 7d1376d802
commit 3765e8f18c
1 changed files with 9 additions and 36 deletions
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45
drivers/rtc/rtc-omap.c
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@ -324,7 +324,7 @@ MODULE_DEVICE_TABLE(of, omap_rtc_of_match);
static int __init omap_rtc_probe(struct platform_device *pdev)
{
struct resource *res, *mem;
struct resource *res;
struct rtc_device *rtc;
u8 reg, new_ctrl;
const struct platform_device_id *id_entry;
@ -352,18 +352,9 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
return -ENOENT;
}
mem = request_mem_region(res->start, resource_size(res), pdev->name);
if (!mem) {
pr_debug("%s: RTC registers at %08x are not free\n",
pdev->name, res->start);
return -EBUSY;
}
rtc_base = ioremap(res->start, resource_size(res));
if (!rtc_base) {
pr_debug("%s: RTC registers can't be mapped\n", pdev->name);
goto fail;
}
rtc_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(rtc_base))
return PTR_ERR(rtc_base);
/* Enable the clock/module so that we can access the registers */
pm_runtime_enable(&pdev->dev);
@ -375,7 +366,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc_writel(KICK1_VALUE, OMAP_RTC_KICK1_REG);
}
rtc = rtc_device_register(pdev->name, &pdev->dev,
rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&omap_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
pr_debug("%s: can't register RTC device, err %ld\n",
@ -383,7 +374,6 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
goto fail0;
}
platform_set_drvdata(pdev, rtc);
dev_set_drvdata(&rtc->dev, mem);
/* clear pending irqs, and set 1/second periodic,
* which we'll use instead of update irqs
@ -401,18 +391,18 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc_write(OMAP_RTC_STATUS_ALARM, OMAP_RTC_STATUS_REG);
/* handle periodic and alarm irqs */
if (request_irq(omap_rtc_timer, rtc_irq, 0,
if (devm_request_irq(&pdev->dev, omap_rtc_timer, rtc_irq, 0,
dev_name(&rtc->dev), rtc)) {
pr_debug("%s: RTC timer interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_timer);
goto fail1;
goto fail0;
}
if ((omap_rtc_timer != omap_rtc_alarm) &&
(request_irq(omap_rtc_alarm, rtc_irq, 0,
(devm_request_irq(&pdev->dev, omap_rtc_alarm, rtc_irq, 0,
dev_name(&rtc->dev), rtc))) {
pr_debug("%s: RTC alarm interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_alarm);
goto fail2;
goto fail0;
}
/* On boards with split power, RTC_ON_NOFF won't reset the RTC */
@ -446,25 +436,16 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
return 0;
fail2:
free_irq(omap_rtc_timer, rtc);
fail1:
rtc_device_unregister(rtc);
fail0:
if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER))
rtc_writel(0, OMAP_RTC_KICK0_REG);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
iounmap(rtc_base);
fail:
release_mem_region(mem->start, resource_size(mem));
return -EIO;
}
static int __exit omap_rtc_remove(struct platform_device *pdev)
{
struct rtc_device *rtc = platform_get_drvdata(pdev);
struct resource *mem = dev_get_drvdata(&rtc->dev);
const struct platform_device_id *id_entry =
platform_get_device_id(pdev);
@ -473,12 +454,6 @@ static int __exit omap_rtc_remove(struct platform_device *pdev)
/* leave rtc running, but disable irqs */
rtc_write(0, OMAP_RTC_INTERRUPTS_REG);
free_irq(omap_rtc_timer, rtc);
if (omap_rtc_timer != omap_rtc_alarm)
free_irq(omap_rtc_alarm, rtc);
rtc_device_unregister(rtc);
if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER))
rtc_writel(0, OMAP_RTC_KICK0_REG);
@ -486,8 +461,6 @@ static int __exit omap_rtc_remove(struct platform_device *pdev)
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
iounmap(rtc_base);
release_mem_region(mem->start, resource_size(mem));
return 0;
}