[ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking

move update_process_times() out from under xtime_lock.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 0 insertions, 11 deletions

diff --git a/arch/arm/common/time-acorn.c b/arch/arm/common/time-acorn.c
index 34038eccbba9..d544da414731 100644
--- a/arch/arm/common/time-acorn.c
+++ b/arch/arm/common/time-acorn.c
@@ -69,9 +69,7 @@ void __init ioctime_init(void)
 static irqreturn_t
 ioc_timer_interrupt(int irq, void *dev_id)
 {
-        write_seqlock(&xtime_lock);
         timer_tick();
-        write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }
 
diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index 5c090c9442f5..e38d23770992 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -49,8 +49,6 @@ static irqreturn_t at91sam926x_timer_interrupt(int irq, void *dev_id)
         volatile long nr_ticks;
 
         if (at91_sys_read(AT91_PIT_SR) & AT91_PIT_PITS) {       /* This is a shared interrupt */
-                write_seqlock(&xtime_lock);
-
                 /* Get number to ticks performed before interrupt and clear PIT interrupt */
                 nr_ticks = PIT_PICNT(at91_sys_read(AT91_PIT_PIVR));
                 do {
@@ -58,7 +56,6 @@ static irqreturn_t at91sam926x_timer_interrupt(int irq, void *dev_id)
                         nr_ticks--;
                 } while (nr_ticks);
 
-                write_sequnlock(&xtime_lock);
                 return IRQ_HANDLED;
         } else
                 return IRQ_NONE;                /* not handled */
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index ba3d21d8fba3..6fe481ff4fdf 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -57,8 +57,6 @@ unsigned long iop_gettimeoffset(void)
 static irqreturn_t
 iop_timer_interrupt(int irq, void *dev_id)
 {
-        write_seqlock(&xtime_lock);
-
         write_tisr(1);
 
         while ((signed long)(next_jiffy_time - read_tcr1())
@@ -67,8 +65,6 @@ iop_timer_interrupt(int irq, void *dev_id)
                 next_jiffy_time -= ticks_per_jiffy;
         }
 
-        write_sequnlock(&xtime_lock);
-
         return IRQ_HANDLED;
 }
 
diff --git a/arch/arm/plat-s3c24xx/time.c b/arch/arm/plat-s3c24xx/time.c
index 2ec1daaa0e53..766473b3f98b 100644
--- a/arch/arm/plat-s3c24xx/time.c
+++ b/arch/arm/plat-s3c24xx/time.c
@@ -130,9 +130,7 @@ static unsigned long s3c2410_gettimeoffset (void)
 static irqreturn_t
 s3c2410_timer_interrupt(int irq, void *dev_id)
 {
-        write_seqlock(&xtime_lock);
         timer_tick();
-        write_sequnlock(&xtime_lock);
         return IRQ_HANDLED;
 }