On 09/15/2018 03:33 AM, Wei Yongjun wrote:
> 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: fe1a56420cf2 ("net: lantiq: Add Lantiq / Intel VRX200 Ethernet driver")
> Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
Acked-by: Hauke Mehrtens <ha...@hauke-m.de>
> ---
> drivers/net/ethernet/lantiq_xrx200.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/lantiq_xrx200.c
> b/drivers/net/ethernet/lantiq_xrx200.c
> index c8b6d90..4a16076 100644
> --- a/drivers/net/ethernet/lantiq_xrx200.c
> +++ b/drivers/net/ethernet/lantiq_xrx200.c
> @@ -461,9 +461,9 @@ static int xrx200_probe(struct platform_device *pdev)
> }
>
> priv->pmac_reg = devm_ioremap_resource(dev, res);
> - if (!priv->pmac_reg) {
> + if (IS_ERR(priv->pmac_reg)) {
> dev_err(dev, "failed to request and remap io ranges\n");
> - return -ENOMEM;
> + return PTR_ERR(priv->pmac_reg);
> }
>
> priv->chan_rx.dma.irq = platform_get_irq_byname(pdev, "rx");
>
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