[PATCH AUTOSEL for 4.4 101/162] irqchip/gic-v2: Report failures in gic_irq_domain_alloc

From: Suzuki K Poulose [ Upstream commit 456c59c31c5126fe31c64956c43670060ea9debd ] 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

[PATCH AUTOSEL for 4.4 101/162] irqchip/gic-v2: Report failures in gic_irq_domain_alloc

From: Suzuki K Poulose [ Upstream commit 456c59c31c5126fe31c64956c43670060ea9debd ] 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