6 files changed, 38 insertions, 42 deletions

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 90ab73825401..9a9755c92fad 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -561,7 +561,7 @@ config RTC_DRV_AT91SAM9_GPBR
 
 config RTC_DRV_BFIN
         tristate "Blackfin On-Chip RTC"
-        depends on BLACKFIN
+        depends on BLACKFIN && !BF561
         help
           If you say yes here you will get support for the
           Blackfin On-Chip Real Time Clock.
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index a1af4c27939b..34439ce3967e 100644
--- 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 +361,44 @@ 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;
+        unsigned long timeout;
 
-        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);
+        device_init_wakeup(dev, 1);
 
-        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 */
+        /* sometimes the bootloader touched things, but the write complete was not
+         * enabled, so let's just do a quick timeout here since the IRQ will not fire ...
+         */
+        timeout = jiffies + HZ;
+        while (bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_PENDING)
+                if (time_after(jiffies, timeout))
+                        break;
+        bfin_rtc_reset(dev, RTC_ISTAT_WRITE_COMPLETE);
         bfin_write_RTC_SWCNT(0);
 
-        platform_set_drvdata(pdev, rtc);
-
-        device_init_wakeup(&pdev->dev, 1);
+        /* 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;
+        }
 
         return 0;
 
+ err_irq:
+        free_irq(IRQ_RTC, dev);
  err:
         kfree(rtc);
         return ret;
@@ -414,7 +407,10 @@ 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);
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index 35dcc06eb3e2..f118252f3a9f 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -403,11 +403,14 @@ static long rtc_dev_ioctl(struct file *file,
 
 #ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
         case RTC_UIE_OFF:
+                mutex_unlock(&rtc->ops_lock);
                 clear_uie(rtc);
-                break;
+                return 0;
 
         case RTC_UIE_ON:
+                mutex_unlock(&rtc->ops_lock);
                 err = set_uie(rtc);
+                return err;
 #endif
         default:
                 err = -ENOTTY;
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 640acd20fdde..a150418fba76 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -173,7 +173,7 @@ static int ds1374_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
         int cr, sr;
         int ret = 0;
 
-        if (client->irq < 0)
+        if (client->irq <= 0)
                 return -EINVAL;
 
         mutex_lock(&ds1374->mutex);
@@ -212,7 +212,7 @@ static int ds1374_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
         int cr;
         int ret = 0;
 
-        if (client->irq < 0)
+        if (client->irq <= 0)
                 return -EINVAL;
 
         ret = ds1374_read_time(dev, &now);
@@ -381,7 +381,7 @@ static int ds1374_probe(struct i2c_client *client,
         if (ret)
                 goto out_free;
 
-        if (client->irq >= 0) {
+        if (client->irq > 0) {
                 ret = request_irq(client->irq, ds1374_irq, 0,
                                   "ds1374", client);
                 if (ret) {
@@ -401,7 +401,7 @@ static int ds1374_probe(struct i2c_client *client,
         return 0;
 
 out_irq:
-        if (client->irq >= 0)
+        if (client->irq > 0)
                 free_irq(client->irq, client);
 
 out_free:
@@ -414,7 +414,7 @@ static int __devexit ds1374_remove(struct i2c_client *client)
 {
         struct ds1374 *ds1374 = i2c_get_clientdata(client);
 
-        if (client->irq >= 0) {
+        if (client->irq > 0) {
                 mutex_lock(&ds1374->mutex);
                 ds1374->exiting = 1;
                 mutex_unlock(&ds1374->mutex);
diff --git a/drivers/rtc/rtc-max6902.c b/drivers/rtc/rtc-max6902.c
index 12f0310ae89c..78b2551fb19d 100644
--- a/drivers/rtc/rtc-max6902.c
+++ b/drivers/rtc/rtc-max6902.c
@@ -20,8 +20,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
-
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/init.h>
diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c
index b35f9bfa2af4..395985b339c9 100644
--- a/drivers/rtc/rtc-r9701.c
+++ b/drivers/rtc/rtc-r9701.c
@@ -14,7 +14,6 @@
  */
 
 #include <linux/module.h>
-#include <linux/version.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/device.h>