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Date: Wed, 13 Mar 2013 12:21:04 +0530
From: "Vishwanathrao Badarkhe, Manish" <manishv.b@...com>
To: <linux-kernel@...r.kernel.org>, <rtc-linux@...glegroups.com>,
<linux-omap@...r.kernel.org>,
<davinci-linux-open-source@...ux.davincidsp.com>
CC: <a.zummo@...ertech.it>,
"Vishwanathrao Badarkhe, Manish" <manishv.b@...com>
Subject: [PATCH] rtc: omap: update to devm_* API
From: Vishwanathrao Badarkhe, Manish <manishv.b@...com>
Update the code to use devm_* API so that driver
core will manage resources.
Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@...com>
---
Applied on top of linux-next:
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
with tag next-20130312.
:100644 100644 172cc5c... a1f9d30... M drivers/rtc/rtc-omap.c
drivers/rtc/rtc-omap.c | 45 +++++++++------------------------------------
1 files changed, 9 insertions(+), 36 deletions(-)
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 172cc5c..a1f9d30 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -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;
}
--
1.7.4.1
--
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