Blackfin RTC Driver: move irq request/free out of open/release and into probe/remove...

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
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>

diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index a1af4c2..51741dc 100644 (file)
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -218,26 +218,6 @@ static irqreturn_t bfin_rtc_interrupt(int irq, void *dev_id)
                return IRQ_NONE;
 }
 
-static int bfin_rtc_open(struct device *dev)
-{
-       int ret;
-
-       dev_dbg_stamp(dev);
-
-       ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, IRQF_SHARED, to_platform_device(dev)->name, dev);
-       if (!ret)
-               bfin_rtc_reset(dev, RTC_ISTAT_WRITE_COMPLETE);
-
-       return ret;
-}
-
-static void bfin_rtc_release(struct device *dev)
-{
-       dev_dbg_stamp(dev);
-       bfin_rtc_reset(dev, 0);
-       free_irq(IRQ_RTC, dev);
-}
-
 static void bfin_rtc_int_set(u16 rtc_int)
 {
        bfin_write_RTC_ISTAT(rtc_int);
@@ -370,8 +350,6 @@ static int bfin_rtc_proc(struct device *dev, struct seq_file *seq)
 }
 
 static struct rtc_class_ops bfin_rtc_ops = {
-       .open          = bfin_rtc_open,
-       .release       = bfin_rtc_release,
        .ioctl         = bfin_rtc_ioctl,
        .read_time     = bfin_rtc_read_time,
        .set_time      = bfin_rtc_set_time,
@@ -383,29 +361,37 @@ static struct rtc_class_ops bfin_rtc_ops = {
 static int __devinit bfin_rtc_probe(struct platform_device *pdev)
 {
        struct bfin_rtc *rtc;
+       struct device *dev = &pdev->dev;
        int ret = 0;
 
-       dev_dbg_stamp(&pdev->dev);
+       dev_dbg_stamp(dev);
 
+       /* Allocate memory for our RTC struct */
        rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
        if (unlikely(!rtc))
                return -ENOMEM;
+       platform_set_drvdata(pdev, rtc);
 
-       rtc->rtc_dev = rtc_device_register(pdev->name, &pdev->dev, &bfin_rtc_ops, THIS_MODULE);
-       if (IS_ERR(rtc)) {
-               ret = PTR_ERR(rtc->rtc_dev);
+       /* Grab the IRQ and init the hardware */
+       ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, IRQF_SHARED, pdev->name, dev);
+       if (unlikely(ret))
                goto err;
-       }
-
-       /* see comment at top of file about stopwatch/PIE */
+       bfin_rtc_reset(dev, RTC_ISTAT_WRITE_COMPLETE);
        bfin_write_RTC_SWCNT(0);
 
-       platform_set_drvdata(pdev, rtc);
+       /* Register our RTC with the RTC framework */
+       rtc->rtc_dev = rtc_device_register(pdev->name, dev, &bfin_rtc_ops, THIS_MODULE);
+       if (unlikely(IS_ERR(rtc))) {
+               ret = PTR_ERR(rtc->rtc_dev);
+               goto err_irq;
+       }
 
-       device_init_wakeup(&pdev->dev, 1);
+       device_init_wakeup(dev, 1);
 
        return 0;
 
+ err_irq:
+       free_irq(IRQ_RTC, dev);
  err:
        kfree(rtc);
        return ret;
@@ -414,7 +400,10 @@ static int __devinit bfin_rtc_probe(struct platform_device *pdev)
 static int __devexit bfin_rtc_remove(struct platform_device *pdev)
 {
        struct bfin_rtc *rtc = platform_get_drvdata(pdev);
+       struct device *dev = &pdev->dev;
 
+       bfin_rtc_reset(dev, 0);
+       free_irq(IRQ_RTC, dev);
        rtc_device_unregister(rtc->rtc_dev);
        platform_set_drvdata(pdev, NULL);
        kfree(rtc);