Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

[linux-2.6] / include / asm-generic / rtc.h

diff --git a/include/asm-generic/rtc.h b/include/asm-generic/rtc.h
index dd1bed860e6487a3c325c2dfd66570efe8616066..71ef3f0b9685f8adbfcc74a7717b8f7baf2cd496 100644 (file)
--- a/include/asm-generic/rtc.h
+++ b/include/asm-generic/rtc.h
@@ -12,11 +12,10 @@
 #ifndef __ASM_RTC_H__
 #define __ASM_RTC_H__
 
-#ifdef __KERNEL__
-
 #include <linux/mc146818rtc.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
+#include <linux/delay.h>
 
 #define RTC_PIE 0x40           /* periodic interrupt enable */
 #define RTC_AIE 0x20           /* alarm interrupt enable */
@@ -45,7 +44,6 @@ static inline unsigned char rtc_is_updating(void)
 
 static inline unsigned int get_rtc_time(struct rtc_time *time)
 {
-       unsigned long uip_watchdog = jiffies;
        unsigned char ctrl;
        unsigned long flags;
 
@@ -55,19 +53,15 @@ static inline unsigned int get_rtc_time(struct rtc_time *time)
 
        /*
         * read RTC once any update in progress is done. The update
-        * can take just over 2ms. We wait 10 to 20ms. There is no need to
+        * can take just over 2ms. We wait 20ms. There is no need to
         * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
         * If you need to know *exactly* when a second has started, enable
         * periodic update complete interrupts, (via ioctl) and then 
         * immediately read /dev/rtc which will block until you get the IRQ.
         * Once the read clears, read the RTC time (again via ioctl). Easy.
         */
-
-       if (rtc_is_updating() != 0)
-               while (jiffies - uip_watchdog < 2*HZ/100) {
-                       barrier();
-                       cpu_relax();
-               }
+       if (rtc_is_updating())
+               mdelay(20);
 
        /*
         * Only the values that we read from the RTC are set. We leave
@@ -213,5 +207,4 @@ static inline int set_rtc_pll(struct rtc_pll_info *pll)
        return -EINVAL;
 }
 
-#endif /* __KERNEL__ */
 #endif /* __ASM_RTC_H__ */