Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-01 16:41:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Uwe Kleine-König 2009-12-17 12:43:29 +01:00
parent 501d70383a
commit a602f0f2f0
3 changed files with 3 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mach-pxa/time.c
View File

@ -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:

8
arch/arm/mach-sa1100/time.c
View File

@ -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:

9
arch/arm/plat-nomadik/timer.c
View File

@ -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;