ARM: OMAP: Fix spinlock recursion for dyntick
Fix spinlock recursion for dyntick. Modified version based
on Imre Deak's earlier patch.
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c
index f7b4e89..cf6df33 100644
--- a/arch/arm/plat-omap/timer32k.c
+++ b/arch/arm/plat-omap/timer32k.c
@@ -194,14 +194,11 @@
* issues with dynamic tick. In the dynamic tick case, we need to lock
* with irqsave.
*/
-static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
+static inline irqreturn_t _omap_32k_timer_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
{
- unsigned long flags;
unsigned long now;
- write_seqlock_irqsave(&xtime_lock, flags);
-
omap_32k_timer_ack_irq();
now = omap_32k_sync_timer_read();
@@ -217,6 +214,23 @@
* continuous timer can be overridden from pm_idle to be longer.
*/
omap_32k_timer_start(omap_32k_last_tick + OMAP_32K_TICKS_PER_HZ - now);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t omap_32k_timer_handler(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ return _omap_32k_timer_interrupt(irq, dev_id, regs);
+}
+
+static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ unsigned long flags;
+
+ write_seqlock_irqsave(&xtime_lock, flags);
+ _omap_32k_timer_interrupt(irq, dev_id, regs);
write_sequnlock_irqrestore(&xtime_lock, flags);
return IRQ_HANDLED;
@@ -262,7 +276,7 @@
.enable = omap_32k_timer_enable_dyn_tick,
.disable = omap_32k_timer_disable_dyn_tick,
.reprogram = omap_32k_timer_reprogram,
- .handler = omap_32k_timer_interrupt,
+ .handler = omap_32k_timer_handler,
};
#endif /* CONFIG_NO_IDLE_HZ */