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Date:   Tue, 29 Dec 2020 15:15:14 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     tglx@...utronix.de, maz@...nel.org
Cc:     linux-kernel@...r.kernel.org, yejune.deng@...il.com
Subject: [PATCH] irqchip/gic: add WARN_ON() to facilitate backtracking

There is two function gic_of_init() and gic_of_init_child() called
gic_of_setup(),so add WARN_ON() to facilitate backtracking.

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 drivers/irqchip/irq-gic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index b1d9c22..7c11705 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -1380,7 +1380,7 @@ static bool gic_check_eoimode(struct device_node *node, void __iomem **base)
 
 static int gic_of_setup(struct gic_chip_data *gic, struct device_node *node)
 {
-	if (!gic || !node)
+	if (WARN_ON(!gic || !node))
 		return -EINVAL;
 
 	gic->raw_dist_base = of_iomap(node, 0);
-- 
1.9.1

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