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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-12-07 16:49:47 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2013-02-01 14:33:56 -0800 |
| commit | aecb9e1422e904d1950620d90c589a141cb32196 (patch) | |
| tree | 3b300a0cde3c8002fdedebfe0bc4f9bbec422068 /arch/arm/mach-omap2 | |
| parent | 88b62b915b0b7e25870eb0604ed9a92ba4bfc9f7 (diff) | |
| download | talos-obmc-linux-aecb9e1422e904d1950620d90c589a141cb32196.tar.gz talos-obmc-linux-aecb9e1422e904d1950620d90c589a141cb32196.zip | |
ARM: OMAP: make wakeupgen_lock raw
When applying RT patch on top of Linux, spinlocks are
implemented as RT-mutexes, which means they are preemptable.
Current GIC implementation on OMAP is using a spinlock
to protect against preemption. As it turns out, we need
to convert that lock into a raw_spinlock so that OMAP's
interrupt controller works as expected after RT-patch
is applied.
This patch is simply to decrease the amount of changes
RT-team needs to carry out of tree. It doesn't cause any
changes in behavior.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/omap-wakeupgen.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index 5d3b4f4f81ae..8633a43acae2 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -46,7 +46,7 @@ static void __iomem *wakeupgen_base; static void __iomem *sar_base; -static DEFINE_SPINLOCK(wakeupgen_lock); +static DEFINE_RAW_SPINLOCK(wakeupgen_lock); static unsigned int irq_target_cpu[MAX_IRQS]; static unsigned int irq_banks = MAX_NR_REG_BANKS; static unsigned int max_irqs = MAX_IRQS; @@ -134,9 +134,9 @@ static void wakeupgen_mask(struct irq_data *d) { unsigned long flags; - spin_lock_irqsave(&wakeupgen_lock, flags); + raw_spin_lock_irqsave(&wakeupgen_lock, flags); _wakeupgen_clear(d->irq, irq_target_cpu[d->irq]); - spin_unlock_irqrestore(&wakeupgen_lock, flags); + raw_spin_unlock_irqrestore(&wakeupgen_lock, flags); } /* @@ -146,9 +146,9 @@ static void wakeupgen_unmask(struct irq_data *d) { unsigned long flags; - spin_lock_irqsave(&wakeupgen_lock, flags); + raw_spin_lock_irqsave(&wakeupgen_lock, flags); _wakeupgen_set(d->irq, irq_target_cpu[d->irq]); - spin_unlock_irqrestore(&wakeupgen_lock, flags); + raw_spin_unlock_irqrestore(&wakeupgen_lock, flags); } #ifdef CONFIG_HOTPLUG_CPU @@ -189,7 +189,7 @@ static void wakeupgen_irqmask_all(unsigned int cpu, unsigned int set) { unsigned long flags; - spin_lock_irqsave(&wakeupgen_lock, flags); + raw_spin_lock_irqsave(&wakeupgen_lock, flags); if (set) { _wakeupgen_save_masks(cpu); _wakeupgen_set_all(cpu, WKG_MASK_ALL); @@ -197,7 +197,7 @@ static void wakeupgen_irqmask_all(unsigned int cpu, unsigned int set) _wakeupgen_set_all(cpu, WKG_UNMASK_ALL); _wakeupgen_restore_masks(cpu); } - spin_unlock_irqrestore(&wakeupgen_lock, flags); + raw_spin_unlock_irqrestore(&wakeupgen_lock, flags); } #endif |
