Commit-ID: 1d21f2af8571c6a6a44e7c1911780614847b0253 Gitweb: https://git.kernel.org/tip/1d21f2af8571c6a6a44e7c1911780614847b0253 Author: Thomas Gleixner <[email protected]> AuthorDate: Fri, 28 Jun 2019 13:11:50 +0200 Committer: Thomas Gleixner <[email protected]> CommitDate: Wed, 3 Jul 2019 10:12:29 +0200
genirq: Fix misleading synchronize_irq() documentation The function might sleep, so it cannot be called from interrupt context. Not even with care. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Marc Zyngier <[email protected]> Link: https://lkml.kernel.org/r/[email protected] --- kernel/irq/manage.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index dc8b35f2d545..44fc505815d6 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -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) {
