On Mon, 8 Feb 2016 21:41:12 +0100 Lars-Peter Clausen <lars@xxxxxxxxxx> wrote: > Calling synchronize_irq() right before free_irq() is quite useless. On one > hand the IRQ can easily fire again before free_irq() is entered, Well, that depends on whether the interrupt is shared and whether we disabled the interrupt mask inside of the device (which we did). > on the > other hand free_irq() itself calls synchronize_irq() internally (in a race > condition free way), before any state associated with the IRQ is freed. Ok, fair enough. -- Michael
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