Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm: (22 commits)
  [ARM] 3559/1: S3C2442: core and serial port
  [ARM] 3557/1: S3C24XX: centralise and cleanup uart registration
  [ARM] 3558/1: SMDK24XX: LED platform devices
  [ARM] 3534/1: add spi support to lubbock platform
  [ARM] 3554/1: ARM: Fix dyntick locking
  [ARM] 3553/1: S3C24XX: earlier print of cpu idcode info
  [ARM] 3552/1: S3C24XX: Move VA of GPIO for low-level debug
  [ARM] 3551/1: S3C24XX: PM code failes to compile with CONFIG_DCACHE_WRITETHROUGH
  [ARM] 3550/1: OSIRIS: fix serial port map for 1:1
  [ARM] 3548/1: Fix the ARMv6 CPU id in compressed/head.S
  [ARM] 3335/1: Old-abi Thumb sys_syscall broken
  [ARM] 3467/1: [3/3] Support for Philips PNX4008 platform: defconfig
  [ARM] 3466/1: [2/3] Support for Philips PNX4008 platform: chip support
  [ARM] 3465/1: [1/3] Support for Philips PNX4008 platform: headers
  [ARM] 3407/1: lpd7x: documetation update
  [ARM] 3406/1: lpd7x: compilation fix for smc91x
  [ARM] 3405/1: lpd7a40x: CPLD ssp driver
  [ARM] 3404/1: lpd7a40x: AMBA CLCD support
  [ARM] 3403/1: lpd7a40x: updated default configurations
  [ARM] 3402/1: lpd7a40x: serial driver bug fix
  ...

1 files changed, 17 insertions, 7 deletions

diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index d6bd435a6857..9c12d4fefbd3 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -379,7 +379,7 @@ static int timer_dyn_tick_enable(void)
         int ret = -ENODEV;
 
         if (dyn_tick) {
-                write_seqlock_irqsave(&xtime_lock, flags);
+                spin_lock_irqsave(&dyn_tick->lock, flags);
                 ret = 0;
                 if (!(dyn_tick->state & DYN_TICK_ENABLED)) {
                         ret = dyn_tick->enable();
@@ -387,7 +387,7 @@ static int timer_dyn_tick_enable(void)
                         if (ret == 0)
                                 dyn_tick->state |= DYN_TICK_ENABLED;
                 }
-                write_sequnlock_irqrestore(&xtime_lock, flags);
+                spin_unlock_irqrestore(&dyn_tick->lock, flags);
         }
 
         return ret;
@@ -400,7 +400,7 @@ static int timer_dyn_tick_disable(void)
         int ret = -ENODEV;
 
         if (dyn_tick) {
-                write_seqlock_irqsave(&xtime_lock, flags);
+                spin_lock_irqsave(&dyn_tick->lock, flags);
                 ret = 0;
                 if (dyn_tick->state & DYN_TICK_ENABLED) {
                         ret = dyn_tick->disable();
@@ -408,7 +408,7 @@ static int timer_dyn_tick_disable(void)
                         if (ret == 0)
                                 dyn_tick->state &= ~DYN_TICK_ENABLED;
                 }
-                write_sequnlock_irqrestore(&xtime_lock, flags);
+                spin_unlock_irqrestore(&dyn_tick->lock, flags);
         }
 
         return ret;
@@ -422,15 +422,20 @@ static int timer_dyn_tick_disable(void)
 void timer_dyn_reprogram(void)
 {
         struct dyn_tick_timer *dyn_tick = system_timer->dyn_tick;
-        unsigned long next, seq;
+        unsigned long next, seq, flags;
 
-        if (dyn_tick && (dyn_tick->state & DYN_TICK_ENABLED)) {
+        if (!dyn_tick)
+                return;
+
+        spin_lock_irqsave(&dyn_tick->lock, flags);
+        if (dyn_tick->state & DYN_TICK_ENABLED) {
                 next = next_timer_interrupt();
                 do {
                         seq = read_seqbegin(&xtime_lock);
-                        dyn_tick->reprogram(next_timer_interrupt() - jiffies);
+                        dyn_tick->reprogram(next - jiffies);
                 } while (read_seqretry(&xtime_lock, seq));
         }
+        spin_unlock_irqrestore(&dyn_tick->lock, flags);
 }
 
 static ssize_t timer_show_dyn_tick(struct sys_device *dev, char *buf)
@@ -499,5 +504,10 @@ void __init time_init(void)
         if (system_timer->offset == NULL)
                 system_timer->offset = dummy_gettimeoffset;
         system_timer->init();
+
+#ifdef CONFIG_NO_IDLE_HZ
+        if (system_timer->dyn_tick)
+                system_timer->dyn_tick->lock = SPIN_LOCK_UNLOCKED;
+#endif
 }