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Make hard_irq_disable() actually hard-disable interrupts 

At present, hard_irq_disable() does nothing on powerpc because of
this code in include/linux/interrupt.h:

    #ifndef hard_irq_disable
    #define hard_irq_disable()      do { } while(0)
    #endif

So we need to make our hard_irq_disable be a macro.  It was previously
a macro until commit 7230c56441 ("powerpc: Rework lazy-interrupt
handling") changed it to a static inline function.

Cc: stable@vger.kernel.org
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
--
 arch/powerpc/include/asm/hw_irq.h |    3 +++
 1 file changed, 3 insertions(+)
This commit is contained in:
Paul Mackerras 2012-06-15 14:51:39 +10:00
parent cfaf025112
commit f948501b36
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/include/asm/hw_irq.h
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@ -100,6 +100,9 @@ static inline void hard_irq_disable(void)
get_paca()->irq_happened |= PACA_IRQ_HARD_DIS;
}
/* include/linux/interrupt.h needs hard_irq_disable to be a macro */
#define hard_irq_disable hard_irq_disable
/*
* This is called by asynchronous interrupts to conditionally
* re-enable hard interrupts when soft-disabled after having