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-cmt.c b/arch/sh/kernel/timers/timer-cmt.c
index 24b0399..95581dc 100644
--- a/arch/sh/kernel/timers/timer-cmt.c
+++ b/arch/sh/kernel/timers/timer-cmt.c
@@ -11,7 +11,6 @@
#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>
@@ -46,13 +45,9 @@
#error "Unknown CPU SUBTYPE"
#endif
-static DEFINE_SPINLOCK(cmt0_lock);
-
static unsigned long cmt_timer_get_offset(void)
{
int count;
- unsigned long flags;
-
static unsigned short count_p = 0xffff; /* for the first call after boot */
static unsigned long jiffies_p = 0;
@@ -61,7 +56,6 @@
*/
unsigned long jiffies_t;
- spin_lock_irqsave(&cmt0_lock, flags);
/* timer count may underflow right here */
count = ctrl_inw(CMT_CMCOR_0);
count -= ctrl_inw(CMT_CMCNT_0);
@@ -88,7 +82,6 @@
jiffies_p = jiffies_t;
count_p = count;
- spin_unlock_irqrestore(&cmt0_lock, flags);
count = ((LATCH-1) - count) * TICK_SIZE;
count = (count + LATCH/2) / LATCH;
@@ -122,7 +115,7 @@
static struct irqaction cmt_irq = {
.name = "timer",
.handler = cmt_timer_interrupt,
- .flags = IRQF_DISABLED,
+ .flags = IRQF_DISABLED | IRQF_TIMER,
.mask = CPU_MASK_NONE,
};