genirq: Fix misleading synchronize_irq() documentation
commit 1d21f2af upstream. The function might sleep, so it cannot be called from interrupt context. Not even with care. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/20190628111440.189241552@linutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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