linux-kernel - [irqchip: irq/irqchip-fixes] irqchip/irq-qcom-mpm: fix return value check in qcom_mpm

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Date:   Tue, 05 Apr 2022 15:40:01 -0000
From:   "irqchip-bot for Yang Yingliang" <tip-bot2@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Hulk Robot <hulkci@...wei.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        Shawn Guo <shawn.guo@...aro.org>,
        Marc Zyngier <maz@...nel.org>, tglx@...utronix.de
Subject: [irqchip: irq/irqchip-fixes] irqchip/irq-qcom-mpm: fix return value
 check in qcom_mpm_init()

The following commit has been merged into the irq/irqchip-fixes branch of irqchip:

Commit-ID:     76ff614a79152cee07a2c48080c3dc91c56f0f1d
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/76ff614a79152cee07a2c48080c3dc91c56f0f1d
Author:        Yang Yingliang <yangyingliang@...wei.com>
AuthorDate:    Wed, 16 Mar 2022 10:51:00 +08:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Tue, 05 Apr 2022 16:33:13 +01:00

irqchip/irq-qcom-mpm: fix return value check in qcom_mpm_init()

If devm_platform_ioremap_resource() fails, it never returns
NULL, replace NULL check with IS_ERR().

Fixes: a6199bb514d8 ("irqchip: Add Qualcomm MPM controller driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
Acked-by: Shawn Guo <shawn.guo@...aro.org>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20220316025100.1758413-1-yangyingliang@huawei.com
---
 drivers/irqchip/irq-qcom-mpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-qcom-mpm.c b/drivers/irqchip/irq-qcom-mpm.c
index eea5a75..d306146 100644
--- a/drivers/irqchip/irq-qcom-mpm.c
+++ b/drivers/irqchip/irq-qcom-mpm.c
@@ -375,7 +375,7 @@ static int qcom_mpm_init(struct device_node *np, struct device_node *parent)
 	raw_spin_lock_init(&priv->lock);
 
 	priv->base = devm_platform_ioremap_resource(pdev, 0);
-	if (!priv->base)
+	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
 	for (i = 0; i < priv->reg_stride; i++) {