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Some bootloaders may leave a pending interrupt for the timer and thus msm_timer_interrupt() has a check for a NULL event handler. Unmask and register for the interrupt after registering the clockevent so that we can get the NULL pointer check out of the fast path. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: David Brown <davidb@codeaurora.org>