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Diffstat (limited to 'arch/sh/kernel/timers/timer-mtu2.c')
-rw-r--r--arch/sh/kernel/timers/timer-mtu2.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/arch/sh/kernel/timers/timer-mtu2.c b/arch/sh/kernel/timers/timer-mtu2.c
index 92c98b5b11ea..201f0a62132f 100644
--- a/arch/sh/kernel/timers/timer-mtu2.c
+++ b/arch/sh/kernel/timers/timer-mtu2.c
@@ -12,7 +12,6 @@
12#include <linux/init.h> 12#include <linux/init.h>
13#include <linux/kernel.h> 13#include <linux/kernel.h>
14#include <linux/interrupt.h> 14#include <linux/interrupt.h>
15#include <linux/spinlock.h>
16#include <linux/seqlock.h> 15#include <linux/seqlock.h>
17#include <asm/timer.h> 16#include <asm/timer.h>
18#include <asm/io.h> 17#include <asm/io.h>
@@ -28,9 +27,6 @@
28 * However, we can implement channel cascade if we go the overflow route and 27 * However, we can implement channel cascade if we go the overflow route and
29 * get away with using 2 MTU2 channels as a 32-bit timer. 28 * get away with using 2 MTU2 channels as a 32-bit timer.
30 */ 29 */
31
32static DEFINE_SPINLOCK(mtu2_lock);
33
34#define MTU2_TSTR 0xfffe4280 30#define MTU2_TSTR 0xfffe4280
35#define MTU2_TCR_1 0xfffe4380 31#define MTU2_TCR_1 0xfffe4380
36#define MTU2_TMDR_1 0xfffe4381 32#define MTU2_TMDR_1 0xfffe4381
@@ -55,8 +51,6 @@ static DEFINE_SPINLOCK(mtu2_lock);
55static unsigned long mtu2_timer_get_offset(void) 51static unsigned long mtu2_timer_get_offset(void)
56{ 52{
57 int count; 53 int count;
58 unsigned long flags;
59
60 static int count_p = 0x7fff; /* for the first call after boot */ 54 static int count_p = 0x7fff; /* for the first call after boot */
61 static unsigned long jiffies_p = 0; 55 static unsigned long jiffies_p = 0;
62 56
@@ -65,7 +59,6 @@ static unsigned long mtu2_timer_get_offset(void)
65 */ 59 */
66 unsigned long jiffies_t; 60 unsigned long jiffies_t;
67 61
68 spin_lock_irqsave(&mtu2_lock, flags);
69 /* timer count may underflow right here */ 62 /* timer count may underflow right here */
70 count = ctrl_inw(MTU2_TCNT_1); /* read the latched count */ 63 count = ctrl_inw(MTU2_TCNT_1); /* read the latched count */
71 64
@@ -90,7 +83,6 @@ static unsigned long mtu2_timer_get_offset(void)
90 jiffies_p = jiffies_t; 83 jiffies_p = jiffies_t;
91 84
92 count_p = count; 85 count_p = count;
93 spin_unlock_irqrestore(&mtu2_lock, flags);
94 86
95 count = ((LATCH-1) - count) * TICK_SIZE; 87 count = ((LATCH-1) - count) * TICK_SIZE;
96 count = (count + LATCH/2) / LATCH; 88 count = (count + LATCH/2) / LATCH;
@@ -118,7 +110,7 @@ static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id)
118static struct irqaction mtu2_irq = { 110static struct irqaction mtu2_irq = {
119 .name = "timer", 111 .name = "timer",
120 .handler = mtu2_timer_interrupt, 112 .handler = mtu2_timer_interrupt,
121 .flags = IRQF_DISABLED, 113 .flags = IRQF_DISABLED | IRQF_TIMER,
122 .mask = CPU_MASK_NONE, 114 .mask = CPU_MASK_NONE,
123}; 115};
124 116