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authorWan ZongShun <mcuos.com@gmail.com>2010-08-10 18:02:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-11 08:59:08 -0700
commit23e53be94a7bf9220e1e3d8b0b56b8c96cb88e3c (patch)
treee43b774742d66f73f06da43c08182253b32b6bc2 /drivers/rtc/rtc-nuc900.c
parent84f20a6928bb2b8e5f7ab50686bdf1566479363a (diff)
downloadlinux-23e53be94a7bf9220e1e3d8b0b56b8c96cb88e3c.tar.bz2
rtc/nuc900: modify enable/disable IRQs and driver data setting location
This patch does two modifications: (1) Adjust enable/disable IRQs location,enable it after rtc registration and disable it prior to unregistration. (2) Put 'platform_set_drvdata(pdev, nuc900_rtc)' in front of rtc registration still be safety, though there is no need to do this, when I move enable irq after rtc registration, I think still put 'platform_set_drvdata' before rtc registration that would be a good habit. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/rtc-nuc900.c')
-rw-r--r--drivers/rtc/rtc-nuc900.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 84336d170a38..0267ea3b0f67 100644
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -269,29 +269,30 @@ static int __devinit nuc900_rtc_probe(struct platform_device *pdev)
goto fail2;
}
- nuc900_rtc->irq_num = platform_get_irq(pdev, 0);
- if (request_irq(nuc900_rtc->irq_num, nuc900_rtc_interrupt,
- IRQF_DISABLED, "nuc900rtc", nuc900_rtc)) {
- dev_err(&pdev->dev, "NUC900 RTC request irq failed\n");
- err = -EBUSY;
- goto fail3;
- }
+ platform_set_drvdata(pdev, nuc900_rtc);
nuc900_rtc->rtcdev = rtc_device_register(pdev->name, &pdev->dev,
&nuc900_rtc_ops, THIS_MODULE);
if (IS_ERR(nuc900_rtc->rtcdev)) {
dev_err(&pdev->dev, "rtc device register faild\n");
err = PTR_ERR(nuc900_rtc->rtcdev);
- goto fail4;
+ goto fail3;
}
- platform_set_drvdata(pdev, nuc900_rtc);
__raw_writel(__raw_readl(nuc900_rtc->rtc_reg + REG_RTC_TSSR) | MODE24,
nuc900_rtc->rtc_reg + REG_RTC_TSSR);
+ nuc900_rtc->irq_num = platform_get_irq(pdev, 0);
+ if (request_irq(nuc900_rtc->irq_num, nuc900_rtc_interrupt,
+ IRQF_DISABLED, "nuc900rtc", nuc900_rtc)) {
+ dev_err(&pdev->dev, "NUC900 RTC request irq failed\n");
+ err = -EBUSY;
+ goto fail4;
+ }
+
return 0;
-fail4: free_irq(nuc900_rtc->irq_num, nuc900_rtc);
+fail4: rtc_device_unregister(nuc900_rtc->rtcdev);
fail3: iounmap(nuc900_rtc->rtc_reg);
fail2: release_mem_region(res->start, resource_size(res));
fail1: kfree(nuc900_rtc);
@@ -303,8 +304,8 @@ static int __devexit nuc900_rtc_remove(struct platform_device *pdev)
struct nuc900_rtc *nuc900_rtc = platform_get_drvdata(pdev);
struct resource *res;
- rtc_device_unregister(nuc900_rtc->rtcdev);
free_irq(nuc900_rtc->irq_num, nuc900_rtc);
+ rtc_device_unregister(nuc900_rtc->rtcdev);
iounmap(nuc900_rtc->rtc_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);