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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: a6199bb514 ("irqchip: Add Qualcomm MPM controller driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220316025100.1758413-1-yangyingliang@huawei.com
This commit is contained in:
Yang Yingliang 2022-03-16 10:51:00 +08:00 committed by Marc Zyngier
parent fa4dcc8803
commit 76ff614a79
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-qcom-mpm.c
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@ -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++) {