In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Fixes: f079b6406348 ("staging: mt7621-eth: add gigabit switch driver (GSW)")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
esw->dev = &pdev->dev;
esw->irq = irq_of_parse_and_map(np, 0);
esw->base = devm_ioremap_resource(&pdev->dev, res);
- if (!esw->base)
- return -EADDRNOTAVAIL;
+ if (IS_ERR(esw->base))
+ return PTR_ERR(esw->base);
port_map = of_get_property(np, "mediatek,portmap", NULL);
if (port_map)
return -ENOMEM;
gsw->base = devm_ioremap_resource(&pdev->dev, res);
- if (!gsw->base)
- return -EADDRNOTAVAIL;
+ if (IS_ERR(gsw->base))
+ return PTR_ERR(gsw->base);
gsw->dev = &pdev->dev;
return -ENOMEM;
gsw->base = devm_ioremap_resource(&pdev->dev, res);
- if (!gsw->base)
- return -EADDRNOTAVAIL;
+ if (IS_ERR(gsw->base))
+ return PTR_ERR(gsw->base);
gsw->dev = &pdev->dev;
gsw->irq = platform_get_irq(pdev, 0);