staging: mt7621-eth: fix return value check in mtk_probe()

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@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/mt7621-eth/mtk_eth_soc.c b/drivers/staging/mt7621-eth/mtk_eth_soc.c
index 98b44629bc1dd2697cb48cb963942074b04798bf..dea4270478b186068aa477e5ca18461a9cbcd520 100644 (file)
--- a/drivers/staging/mt7621-eth/mtk_eth_soc.c
+++ b/drivers/staging/mt7621-eth/mtk_eth_soc.c
@@ -2077,8 +2077,8 @@ static int mtk_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        eth->base = devm_ioremap_resource(&pdev->dev, res);
-       if (!eth->base)
-               return -EADDRNOTAVAIL;
+       if (IS_ERR(eth->base))
+               return PTR_ERR(eth->base);
 
        spin_lock_init(&eth->page_lock);