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authorTiejun Chen <tiejun.chen@windriver.com>2013-07-15 10:36:04 +0800
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-07-24 14:18:44 +1000
commit0b88f772bdf2847461debf417b1ee96043a7cb1b (patch)
treea2abb3bc097e52117ff5005e2f50a1a45eda0736 /arch
parent0e0ed6406e61434d3f38fb58aa8464ec4722b77e (diff)
downloadlinux-0b88f772bdf2847461debf417b1ee96043a7cb1b.tar.bz2
powerpc: Access local paca after hard irq disabled
In hard_irq_disable(), we accessed the PACA before we hard disabled the interrupts, potentially causing a warning as get_paca() will us debug_smp_processor_id(). Move that to after the disabling, and also use local_paca directly rather than get_paca() to avoid several redundant and useless checks. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/include/asm/hw_irq.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h
index ba713f166fa5..10be1dd01c6b 100644
--- a/arch/powerpc/include/asm/hw_irq.h
+++ b/arch/powerpc/include/asm/hw_irq.h
@@ -96,10 +96,11 @@ static inline bool arch_irqs_disabled(void)
#endif
#define hard_irq_disable() do { \
- u8 _was_enabled = get_paca()->soft_enabled; \
+ u8 _was_enabled; \
__hard_irq_disable(); \
- get_paca()->soft_enabled = 0; \
- get_paca()->irq_happened |= PACA_IRQ_HARD_DIS; \
+ _was_enabled = local_paca->soft_enabled; \
+ local_paca->soft_enabled = 0; \
+ local_paca->irq_happened |= PACA_IRQ_HARD_DIS; \
if (_was_enabled) \
trace_hardirqs_off(); \
} while(0)