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authorMarc Zyngier <maz@kernel.org>2020-09-17 17:50:02 +0200
committerMarc Zyngier <maz@kernel.org>2020-09-17 17:50:02 +0200
commiteff65bd43958fbb9a2912a1e2069e32057d2accc (patch)
tree4a931962815172575610daa0832dd643b56e6035 /kernel/irq
parentMerge remote-tracking branch 'origin/irq/ipi-as-irq' into irq/irqchip-next (diff)
parentirqchip/gic-v2, v3: Prevent SW resends entirely (diff)
downloadlinux-eff65bd43958fbb9a2912a1e2069e32057d2accc.tar.xz
linux-eff65bd43958fbb9a2912a1e2069e32057d2accc.zip
Merge remote-tracking branch 'origin/irq/gic-retrigger' into irq/irqchip-next
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/resend.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index c48ce19a257f..8ccd32a0cc80 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 */