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xtensa: fix arch_irqs_disabled_flags implementation 

IRQs are disabled when PS.EXCM is set or PS.INTLEVEL is equal to or
higher than LOCKLEVEL.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Max Filippov 2013-03-31 06:34:10 +04:00 committed by Chris Zankel
parent c92931b200
commit 031d0112d7
1 changed files with 4 additions and 1 deletions
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5
arch/xtensa/include/asm/irqflags.h
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@ -47,7 +47,10 @@ static inline void arch_local_irq_restore(unsigned long flags)
static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
return (flags & 0xf) != 0;
#if XCHAL_EXCM_LEVEL < LOCKLEVEL || (1 << PS_EXCM_BIT) < LOCKLEVEL
#error "XCHAL_EXCM_LEVEL and 1<<PS_EXCM_BIT must be no less than LOCKLEVEL"
#endif
return (flags & (PS_INTLEVEL_MASK | (1 << PS_EXCM_BIT))) >= LOCKLEVEL;
}
static inline bool arch_irqs_disabled(void)