[PATCH -next] staging: mt7621-eth: fix return value check in mtk_probe()

* [PATCH -next] staging: mt7621-eth: fix return value check in mtk_probe()
@ 2018-03-22  2:09 Wei Yongjun
  0 siblings, 0 replies; only message in thread
From: Wei Yongjun @ 2018-03-22  2:09 UTC (permalink / raw)
  To: Greg Kroah-Hartman, Matthias Brugger, John Crispin, Michael Lee,
	NeilBrown, Felix Fietkau
  Cc: devel, kernel-janitors, linux-kernel, linux-mediatek,
	Wei Yongjun, linux-arm-kernel

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>
---
 drivers/staging/mt7621-eth/mtk_eth_soc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/mt7621-eth/mtk_eth_soc.c b/drivers/staging/mt7621-eth/mtk_eth_soc.c
index 98b4462..dea4270 100644
--- 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);

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