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| author | Suzuki K Poulose | 2017-07-04 11:56:34 +0200 |
|---|---|---|
| committer | Marc Zyngier | 2017-07-04 12:11:25 +0200 |
| commit | 456c59c31c5126fe31c64956c43670060ea9debd (patch) | |
| tree | 84210caf9ef36002a361f93a720073789e8be035 /drivers/irqchip/irq-gic.c | |
| parent | irqchip/atmel-aic: Remove root argument from ->fixup() prototype (diff) | |
| download | kernel-qcow2-linux-456c59c31c5126fe31c64956c43670060ea9debd.tar.gz kernel-qcow2-linux-456c59c31c5126fe31c64956c43670060ea9debd.tar.xz kernel-qcow2-linux-456c59c31c5126fe31c64956c43670060ea9debd.zip | |
irqchip/gic-v2: Report failures in gic_irq_domain_alloc
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 <yingjoe.chen@mediatek.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'drivers/irqchip/irq-gic.c')
| -rw-r--r-- | drivers/irqchip/irq-gic.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 1b1df4f770bd..940c16278758 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; } |