From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 4 Aug 2010 08:53:00 +0000 (+0200)
Subject: Revert "timer: Added usleep[_range] timer"
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e1b004c3ef9c59db5f013528628b51c8653155ec;p=linux-beck.git

Revert "timer: Added usleep[_range] timer"

This reverts commit 22b8f15c2f7130bb0386f548428df2ffd4e81903 to merge
an advanced version.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/linux/delay.h b/include/linux/delay.h
index 0e303d1aacd8..fd832c6d419e 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -45,12 +45,6 @@ extern unsigned long lpj_fine;
 void calibrate_delay(void);
 void msleep(unsigned int msecs);
 unsigned long msleep_interruptible(unsigned int msecs);
-void usleep_range(unsigned long min, unsigned long max);
-
-static inline void usleep(unsigned long usecs)
-{
-	usleep_range(usecs, usecs);
-}
 
 static inline void ssleep(unsigned int seconds)
 {
diff --git a/kernel/timer.c b/kernel/timer.c
index f110f241ab66..ce98685cd1cb 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1755,25 +1755,3 @@ unsigned long msleep_interruptible(unsigned int msecs)
 }
 
 EXPORT_SYMBOL(msleep_interruptible);
-
-static int __sched do_usleep_range(unsigned long min, unsigned long max)
-{
-	ktime_t kmin;
-	unsigned long delta;
-
-	kmin = ktime_set(0, min * NSEC_PER_USEC);
-	delta = max - min;
-	return schedule_hrtimeout_range(&kmin, delta, HRTIMER_MODE_REL);
-}
-
-/**
- * usleep_range - Drop in replacement for udelay where wakeup is flexible
- * @min: Minimum time in usecs to sleep
- * @max: Maximum time in usecs to sleep
- */
-void usleep_range(unsigned long min, unsigned long max)
-{
-	__set_current_state(TASK_UNINTERRUPTIBLE);
-	do_usleep_range(min, max);
-}
-EXPORT_SYMBOL(usleep_range);