1 files changed, 21 insertions, 19 deletions

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index b2eab34f38d9..02faf3c4e0d5 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -213,12 +213,24 @@ static int mask_rtc_irq_bit(unsigned char bit)
 
 static int twl_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
 {
+        struct platform_device *pdev = to_platform_device(dev);
+        int irq = platform_get_irq(pdev, 0);
+        static bool twl_rtc_wake_enabled;
         int ret;
 
-        if (enabled)
+        if (enabled) {
                 ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
-        else
+                if (device_can_wakeup(dev) && !twl_rtc_wake_enabled) {
+                        enable_irq_wake(irq);
+                        twl_rtc_wake_enabled = true;
+                }
+        } else {
                 ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+                if (twl_rtc_wake_enabled) {
+                        disable_irq_wake(irq);
+                        twl_rtc_wake_enabled = false;
+                }
+        }
 
         return ret;
 }
@@ -469,6 +481,12 @@ static int twl_rtc_probe(struct platform_device *pdev)
         if (irq <= 0)
                 goto out1;
 
+        /* Initialize the register map */
+        if (twl_class_is_4030())
+                rtc_reg_map = (u8 *)twl4030_rtc_reg_map;
+        else
+                rtc_reg_map = (u8 *)twl6030_rtc_reg_map;
+
         ret = twl_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
         if (ret < 0)
                 goto out1;
@@ -556,7 +574,6 @@ static int twl_rtc_remove(struct platform_device *pdev)
         free_irq(irq, rtc);
 
         rtc_device_unregister(rtc);
-        platform_set_drvdata(pdev, NULL);
         return 0;
 }
 
@@ -609,22 +626,7 @@ static struct platform_driver twl4030rtc_driver = {
         },
 };
 
-static int __init twl_rtc_init(void)
-{
-        if (twl_class_is_4030())
-                rtc_reg_map = (u8 *) twl4030_rtc_reg_map;
-        else
-                rtc_reg_map = (u8 *) twl6030_rtc_reg_map;
-
-        return platform_driver_register(&twl4030rtc_driver);
-}
-module_init(twl_rtc_init);
-
-static void __exit twl_rtc_exit(void)
-{
-        platform_driver_unregister(&twl4030rtc_driver);
-}
-module_exit(twl_rtc_exit);
+module_platform_driver(twl4030rtc_driver);
 
 MODULE_AUTHOR("Texas Instruments, MontaVista Software");
 MODULE_LICENSE("GPL");