[PATCH] Using msleep() instead of HZ

Use msleep() in a few places.

Signed-off-by: Luca Falavigna <dktrkranz@gmail.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 12 deletions

diff --git a/drivers/char/rtc.c b/drivers/char/rtc.c
index ff4f09804865..d8f9e94ae475 100644
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -78,6 +78,7 @@
 #include <linux/sysctl.h>
 #include <linux/wait.h>
 #include <linux/bcd.h>
+#include <linux/delay.h>
 
 #include <asm/current.h>
 #include <asm/uaccess.h>
@@ -894,7 +895,6 @@ static int __init rtc_init(void)
         struct proc_dir_entry *ent;
 #if defined(__alpha__) || defined(__mips__)
         unsigned int year, ctrl;
-        unsigned long uip_watchdog;
         char *guess = NULL;
 #endif
 #ifdef __sparc__
@@ -1000,12 +1000,8 @@ no_irq:
         /* Each operating system on an Alpha uses its own epoch.
            Let's try to guess which one we are using now. */
         
-        uip_watchdog = jiffies;
         if (rtc_is_updating() != 0)
-                while (jiffies - uip_watchdog < 2*HZ/100) { 
-                        barrier();
-                        cpu_relax();
-                }
+                msleep(20);
         
         spin_lock_irq(&rtc_lock);
         year = CMOS_READ(RTC_YEAR);
@@ -1213,7 +1209,6 @@ static int rtc_proc_open(struct inode *inode, struct file *file)
 
 void rtc_get_rtc_time(struct rtc_time *rtc_tm)
 {
-        unsigned long uip_watchdog = jiffies;
         unsigned char ctrl;
 #ifdef CONFIG_MACH_DECSTATION
         unsigned int real_year;
@@ -1221,7 +1216,7 @@ void rtc_get_rtc_time(struct rtc_time *rtc_tm)
 
         /*
          * 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 
@@ -1230,10 +1225,7 @@ void rtc_get_rtc_time(struct rtc_time *rtc_tm)
          */
 
         if (rtc_is_updating() != 0)
-                while (jiffies - uip_watchdog < 2*HZ/100) {
-                        barrier();
-                        cpu_relax();
-                }
+                msleep(20);
 
         /*
          * Only the values that we read from the RTC are set. We leave