linux-kernel - [PATCH 2/5 v6] irqchip: ingenic: Error out if IRQ domain creation failed

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Message-Id: <1570859630-50942-3-git-send-email-zhouyanjie@zoho.com>
Date:   Sat, 12 Oct 2019 13:53:47 +0800
From:   Zhou Yanjie <zhouyanjie@...o.com>
To:     linux-mips@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, jason@...edaemon.net,
        paul.burton@...s.com, allison@...utok.net, syq@...ian.org,
        rfontana@...hat.com, tglx@...utronix.de, paul@...pouillou.net,
        maz@...nel.org
Subject: [PATCH 2/5 v6] irqchip: ingenic: Error out if IRQ domain creation failed

From: Paul Cercueil <paul@...pouillou.net>

If we cannot create the IRQ domain, the driver should fail to probe
instead of succeeding with just a warning message.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
Signed-off-by: Zhou Yanjie <zhouyanjie@...o.com>
---
 drivers/irqchip/irq-ingenic.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/irqchip/irq-ingenic.c b/drivers/irqchip/irq-ingenic.c
index 06fa810..d97a3a5 100644
--- a/drivers/irqchip/irq-ingenic.c
+++ b/drivers/irqchip/irq-ingenic.c
@@ -87,6 +87,14 @@ static int __init ingenic_intc_of_init(struct device_node *node,
 		goto out_unmap_irq;
 	}
 
+	domain = irq_domain_add_legacy(node, num_chips * 32,
+				       JZ4740_IRQ_BASE, 0,
+				       &irq_domain_simple_ops, NULL);
+	if (!domain) {
+		err = -ENOMEM;
+		goto out_unmap_base;
+	}
+
 	for (i = 0; i < num_chips; i++) {
 		/* Mask all irqs */
 		writel(0xffffffff, intc->base + (i * CHIP_SIZE) +
@@ -112,14 +120,11 @@ static int __init ingenic_intc_of_init(struct device_node *node,
 				       IRQ_NOPROBE | IRQ_LEVEL);
 	}
 
-	domain = irq_domain_add_legacy(node, num_chips * 32, JZ4740_IRQ_BASE, 0,
-				       &irq_domain_simple_ops, NULL);
-	if (!domain)
-		pr_warn("unable to register IRQ domain\n");
-
 	setup_irq(parent_irq, &intc_cascade_action);
 	return 0;
 
+out_unmap_base:
+	iounmap(intc->base);
 out_unmap_irq:
 	irq_dispose_mapping(parent_irq);
 out_free:
-- 
2.7.4