[LEDE-DEV] [PATCH 3/5] staging: mt7621-eth: fix return value check in mtk_probe()

[Rosen Penev]

From: Wei Yongjun <weiyongjun1 at huawei.com>

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: e3cbf478f846 ("staging: mt7621-eth: add the drivers core files")
Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 .../linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index d0d88b9..c806e28 100644
--- a/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1513,7 +1513,7 @@ static int fe_probe(struct platform_device *pdev)
 		soc->reg_table = fe_reg_table;
 
 	fe_base = devm_ioremap_resource(&pdev->dev, res);
-	if (!fe_base) {
+	if (IS_ERR(fe_base)) {
 		err = -EADDRNOTAVAIL;
 		goto err_out;
 	}
-- 
2.7.4