arm/{pxa,sa1100,nomadik}: Don't disable irqs in set_next_event and set_mode

These functions are called with irqs already off.  This commit removes
the calls to raw_local_irq_save and raw_local_irq_restore on platforms
that don't have to use a shared interrupt for their timekeeping.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

3 files changed, 3 insertions, 24 deletions

diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 750c448db672..293e40aeaf29 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -76,14 +76,12 @@ pxa_ost0_interrupt(int irq, void *dev_id)
 static int
 pxa_osmr0_set_next_event(unsigned long delta, struct clock_event_device *dev)
 {
-        unsigned long flags, next, oscr;
+        unsigned long next, oscr;
 
-        raw_local_irq_save(flags);
         OIER |= OIER_E0;
         next = OSCR + delta;
         OSMR0 = next;
         oscr = OSCR;
-        raw_local_irq_restore(flags);
 
         return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
 }
@@ -91,23 +89,17 @@ pxa_osmr0_set_next_event(unsigned long delta, struct clock_event_device *dev)
 static void
 pxa_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *dev)
 {
-        unsigned long irqflags;
-
         switch (mode) {
         case CLOCK_EVT_MODE_ONESHOT:
-                raw_local_irq_save(irqflags);
                 OIER &= ~OIER_E0;
                 OSSR = OSSR_M0;
-                raw_local_irq_restore(irqflags);
                 break;
 
         case CLOCK_EVT_MODE_UNUSED:
         case CLOCK_EVT_MODE_SHUTDOWN:
                 /* initializing, released, or preparing for suspend */
-                raw_local_irq_save(irqflags);
                 OIER &= ~OIER_E0;
                 OSSR = OSSR_M0;
-                raw_local_irq_restore(irqflags);
                 break;
 
         case CLOCK_EVT_MODE_RESUME:
diff --git a/arch/arm/mach-sa1100/time.c b/arch/arm/mach-sa1100/time.c
index b9cbb56d6e9d..74b6e0e570b6 100644
--- a/arch/arm/mach-sa1100/time.c
+++ b/arch/arm/mach-sa1100/time.c
@@ -35,14 +35,12 @@ static irqreturn_t sa1100_ost0_interrupt(int irq, void *dev_id)
 static int
 sa1100_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
 {
-        unsigned long flags, next, oscr;
+        unsigned long next, oscr;
 
-        raw_local_irq_save(flags);
         OIER |= OIER_E0;
         next = OSCR + delta;
         OSMR0 = next;
         oscr = OSCR;
-        raw_local_irq_restore(flags);
 
         return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
 }
@@ -50,16 +48,12 @@ sa1100_osmr0_set_next_event(unsigned long delta, struct clock_event_device *c)
 static void
 sa1100_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *c)
 {
-        unsigned long flags;
-
         switch (mode) {
         case CLOCK_EVT_MODE_ONESHOT:
         case CLOCK_EVT_MODE_UNUSED:
         case CLOCK_EVT_MODE_SHUTDOWN:
-                raw_local_irq_save(flags);
                 OIER &= ~OIER_E0;
                 OSSR = OSSR_M0;
-                raw_local_irq_restore(flags);
                 break;
 
         case CLOCK_EVT_MODE_RESUME:
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index 62f18ad43a28..fa7cb3a57cbf 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -49,24 +49,17 @@ static struct clocksource nmdk_clksrc = {
 static void nmdk_clkevt_mode(enum clock_event_mode mode,
                              struct clock_event_device *dev)
 {
-        unsigned long flags;
-
         switch (mode) {
         case CLOCK_EVT_MODE_PERIODIC:
-                /* enable interrupts -- and count current value? */
-                raw_local_irq_save(flags);
+                /* count current value? */
                 writel(readl(mtu_base + MTU_IMSC) | 1, mtu_base + MTU_IMSC);
-                raw_local_irq_restore(flags);
                 break;
         case CLOCK_EVT_MODE_ONESHOT:
                 BUG(); /* Not supported, yet */
                 /* FALLTHROUGH */
         case CLOCK_EVT_MODE_SHUTDOWN:
         case CLOCK_EVT_MODE_UNUSED:
-                /* disable irq */
-                raw_local_irq_save(flags);
                 writel(readl(mtu_base + MTU_IMSC) & ~1, mtu_base + MTU_IMSC);
-                raw_local_irq_restore(flags);
                 break;
         case CLOCK_EVT_MODE_RESUME:
                 break;