free_irq(): fix DEBUG_SHIRQ handling
If we're going to run the handler from free_irq() then we must do it with local irq's disabled. Otherwise lockdep complains that the handler is taking irq-safe spinlocks in a non-irq-safe fashion. Cc: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -462,7 +462,9 @@ void free_irq(unsigned int irq, void *dev_id)
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* We do this after actually deregistering it, to make sure that
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* a 'real' IRQ doesn't run in parallel with our fake
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*/
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local_irq_save(flags);
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handler(irq, dev_id);
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local_irq_restore(flags);
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}
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#endif
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}
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