Commit cd022296 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Greg Kroah-Hartman

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: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/20190628111440.189241552@linutronix.deSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 284f5105
......@@ -96,7 +96,8 @@ EXPORT_SYMBOL(synchronize_hardirq);
* to complete before returning. If you use this function while
* holding a resource the IRQ handler may need you will deadlock.
*
* This function may be called - with care - from IRQ context.
* Can only be called from preemptible code as it might sleep when
* an interrupt thread is associated to @irq.
*/
void synchronize_irq(unsigned int irq)
{
......
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