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irqchip/irq-rda-intc: Fix return value check in rda8810_intc_init()

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In case of error, the function of_io_request_and_map() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: d852e62ad6 ("irqchip: Add RDA8810PL interrupt driver")
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Wei Yongjun 2018-12-17 11:58:18 +00:00 committed by Marc Zyngier
parent 893b0aff9a
commit 1fb51c975a
1 changed files with 2 additions and 2 deletions
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4
drivers/irqchip/irq-rda-intc.c
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@ -85,8 +85,8 @@ static int __init rda8810_intc_init(struct device_node *node,
struct device_node *parent)
{
rda_intc_base = of_io_request_and_map(node, 0, "rda-intc");
if (!rda_intc_base)
return -ENXIO;
if (IS_ERR(rda_intc_base))
return PTR_ERR(rda_intc_base);
/* Mask all interrupt sources */
writel_relaxed(RDA_IRQ_MASK_ALL, rda_intc_base + RDA_INTC_MASK_CLR);