If the GIC cannot map an IRQ via irq_domain_ops->alloc(), it doesn't
return an error code. This can cause a problem with drivers, where
it thinks it has successfully got an IRQ for the device, but requesting
the same ends up failure with -ENOSYS (as the IRQ's chip is not set).
Fixes: commit 9a1091ef0017c ("irqchip: gic: Support hierarchy irq domain.")
Cc: Yingjoe Chen <[email protected]>
Cc: Marc Zyngier <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
---
drivers/irqchip/irq-gic.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 1b1df4f..940c162 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1027,8 +1027,11 @@ static int gic_irq_domain_alloc(struct irq_domain
*domain, unsigned int virq,
if (ret)
return ret;
- for (i = 0; i < nr_irqs; i++)
- gic_irq_domain_map(domain, virq + i, hwirq + i);
+ for (i = 0; i < nr_irqs; i++) {
+ ret = gic_irq_domain_map(domain, virq + i, hwirq + i);
+ if (ret)
+ return ret;
+ }
return 0;
}
--
2.7.5
