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| author | Tony Lindgren <tony@atomide.com> | 2006-09-25 12:41:40 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2006-09-25 12:41:40 +0300 |
| commit | 14188b3a4cbffd317ac65434750481d2ee14e09e (patch) | |
| tree | 96749861adc371357a0ea873987b6f2782cacea6 | |
| parent | e4d5ee8109c210b65becfc1ef7697a0ce4eaf3c4 (diff) | |
| download | linux-14188b3a4cbffd317ac65434750481d2ee14e09e.tar.gz linux-14188b3a4cbffd317ac65434750481d2ee14e09e.tar.bz2 linux-14188b3a4cbffd317ac65434750481d2ee14e09e.zip | |
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>
| -rw-r--r-- | arch/arm/plat-omap/timer32k.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/arch/arm/plat-omap/timer32k.c b/arch/arm/plat-omap/timer32k.c index f7b4e89de518..cf6df3378d37 100644 --- a/arch/arm/plat-omap/timer32k.c +++ b/arch/arm/plat-omap/timer32k.c @@ -194,14 +194,11 @@ unsigned long long sched_clock(void) * 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 @@ static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id, * 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 @@ static struct dyn_tick_timer omap_dyn_tick_timer = { .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 */ |