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Date:   Sat,  8 Aug 2020 19:37:14 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Marc Zyngier <maz@...nel.org>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Sasha Levin <sashal@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.7 48/58] irqchip/ti-sci-inta: Fix return value about devm_ioremap_resource()

From: Tiezhu Yang <yangtiezhu@...ngson.cn>

[ Upstream commit 4b127a14cb1385dd355c7673d975258d5d668922 ]

When call function devm_ioremap_resource(), we should use IS_ERR()
to check the return value and return PTR_ERR() if failed.

Fixes: 9f1463b86c13 ("irqchip/ti-sci-inta: Add support for Interrupt Aggregator driver")
Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@...com>
Link: https://lore.kernel.org/r/1591437017-5295-2-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/irqchip/irq-ti-sci-inta.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c
index 7e3ebf6ed2cd1..be0a35d917962 100644
--- a/drivers/irqchip/irq-ti-sci-inta.c
+++ b/drivers/irqchip/irq-ti-sci-inta.c
@@ -572,7 +572,7 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	inta->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(inta->base))
-		return -ENODEV;
+		return PTR_ERR(inta->base);
 
 	domain = irq_domain_add_linear(dev_of_node(dev),
 				       ti_sci_get_num_resources(inta->vint),
-- 
2.25.1

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