提交 8b7f0715 编写于 作者: A Andrew Morton 提交者: Linus Torvalds

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: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 436bbd43
......@@ -462,7 +462,9 @@ void free_irq(unsigned int irq, void *dev_id)
* We do this after actually deregistering it, to make sure that
* a 'real' IRQ doesn't run in parallel with our fake
*/
local_irq_save(flags);
handler(irq, dev_id);
local_irq_restore(flags);
}
#endif
}
......
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