sh: Turn off IRQs around get_timer_offset() calls.
Since all of the sys_timer sources currently do this on their own
within the ->get_offset() path, it's more sensible to just have
the caller take care of it when grabbing xtime_lock. Incidentally,
this is more in line with what others (ie, ARM) are doing already.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/timers/timer-tmu.c b/arch/sh/kernel/timers/timer-tmu.c
index 06a70db..b9ed8a3 100644
--- a/arch/sh/kernel/timers/timer-tmu.c
+++ b/arch/sh/kernel/timers/timer-tmu.c
@@ -17,7 +17,6 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
-#include <linux/spinlock.h>
#include <linux/seqlock.h>
#include <asm/timer.h>
#include <asm/rtc.h>
@@ -31,13 +30,9 @@
#define TMU0_TCR_CALIB 0x0000
-static DEFINE_SPINLOCK(tmu0_lock);
-
static unsigned long tmu_timer_get_offset(void)
{
int count;
- unsigned long flags;
-
static int count_p = 0x7fffffff; /* for the first call after boot */
static unsigned long jiffies_p = 0;
@@ -46,7 +41,6 @@
*/
unsigned long jiffies_t;
- spin_lock_irqsave(&tmu0_lock, flags);
/* timer count may underflow right here */
count = ctrl_inl(TMU0_TCNT); /* read the latched count */
@@ -72,7 +66,6 @@
jiffies_p = jiffies_t;
count_p = count;
- spin_unlock_irqrestore(&tmu0_lock, flags);
count = ((LATCH-1) - count) * TICK_SIZE;
count = (count + LATCH/2) / LATCH;
@@ -106,7 +99,7 @@
static struct irqaction tmu_irq = {
.name = "timer",
.handler = tmu_timer_interrupt,
- .flags = IRQF_DISABLED,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
.mask = CPU_MASK_NONE,
};