[PATCH] ppc64: replace schedule_timeout() with msleep_interruptible()

Use msleep_interruptible() instead of schedule_timeout() in ppc64-specific
code to cleanup/simplify the sleeping logic.  Change the units of the
parameter of do_event_scan_all_cpus() to milliseconds from jiffies.  The
return value of rtas_extended_busy_delay_time() was incorrectly being used
as a jiffies value (it is actually milliseconds), which is fixed by using
the value as a parameter to msleep_interruptible().  Also, use
rtas_extended_busy_delay_time() in another case where similar logic is
duplicated.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/arch/ppc64/kernel/rtc.c b/arch/ppc64/kernel/rtc.c
index d729fefa0df5..6ff52bc61325 100644
--- a/arch/ppc64/kernel/rtc.c
+++ b/arch/ppc64/kernel/rtc.c
@@ -35,6 +35,7 @@
 #include <linux/spinlock.h>
 #include <linux/bcd.h>
 #include <linux/interrupt.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 #include <asm/uaccess.h>
@@ -351,8 +352,7 @@ void rtas_get_rtc_time(struct rtc_time *rtc_tm)
                                 return; /* delay not allowed */
                         }
                         wait_time = rtas_extended_busy_delay_time(error);
-                        set_current_state(TASK_INTERRUPTIBLE);
-                        schedule_timeout(wait_time);
+                        msleep_interruptible(wait_time);
                         error = RTAS_CLOCK_BUSY;
                 }
         } while (error == RTAS_CLOCK_BUSY && (__get_tb() < max_wait_tb));
@@ -386,8 +386,7 @@ int rtas_set_rtc_time(struct rtc_time *tm)
                         if (in_interrupt())
                                 return 1;       /* probably decrementer */
                         wait_time = rtas_extended_busy_delay_time(error);
-                        set_current_state(TASK_INTERRUPTIBLE);
-                        schedule_timeout(wait_time);
+                        msleep_interruptible(wait_time);
                         error = RTAS_CLOCK_BUSY;
                 }
         } while (error == RTAS_CLOCK_BUSY && (__get_tb() < max_wait_tb));