The following commit has been merged into the irq/core branch of tip: Commit-ID: cd1752d34ef33d68d82ef9dcc699b4eaa17c07fc Gitweb: https://git.kernel.org/tip/cd1752d34ef33d68d82ef9dcc699b4eaa17c07fc Author: Marc Zyngier <[email protected]> AuthorDate: Wed, 26 Aug 2020 18:37:50 +01:00 Committer: Marc Zyngier <[email protected]> CommitterDate: Sun, 06 Sep 2020 18:25:23 +01:00
genirq: Walk the irq_data hierarchy when resending an interrupt On resending an interrupt, we only check the outermost irqchip for a irq_retrigger callback. However, this callback could be implemented at an inner level. Use irq_chip_retrigger_hierarchy() in this case. Reviewed-by: Valentin Schneider <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- kernel/irq/resend.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index c48ce19..8ccd32a 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -86,6 +86,18 @@ static int irq_sw_resend(struct irq_desc *desc) } #endif +static int try_retrigger(struct irq_desc *desc) +{ + if (desc->irq_data.chip->irq_retrigger) + return desc->irq_data.chip->irq_retrigger(&desc->irq_data); + +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY + return irq_chip_retrigger_hierarchy(&desc->irq_data); +#else + return 0; +#endif +} + /* * IRQ resend * @@ -113,8 +125,7 @@ int check_irq_resend(struct irq_desc *desc, bool inject) desc->istate &= ~IRQS_PENDING; - if (!desc->irq_data.chip->irq_retrigger || - !desc->irq_data.chip->irq_retrigger(&desc->irq_data)) + if (!try_retrigger(desc)) err = irq_sw_resend(desc); /* If the retrigger was successfull, mark it with the REPLAY bit */
