linux-kernel - [PATCH 4.19 242/422] PCI: mediatek: Fix unchecked return value

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Message-Id: <20191119051414.700418537@linuxfoundation.org>
Date:   Tue, 19 Nov 2019 06:17:19 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Honghui Zhang <honghui.zhang@...iatek.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 242/422] PCI: mediatek: Fix unchecked return value

From: Gustavo A. R. Silva <gustavo@...eddedor.com>

[ Upstream commit 17a0a1e5f6c4bd6df17834312ff577c1373d87b8 ]

Check return value of devm_pci_remap_iospace().

Addresses-Coverity-ID: 1471965 ("Unchecked return value")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Acked-by: Honghui Zhang <honghui.zhang@...iatek.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/controller/pcie-mediatek.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index c5ff6ca65eab2..0d100f56cb884 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -1120,7 +1120,9 @@ static int mtk_pcie_request_resources(struct mtk_pcie *pcie)
 	if (err < 0)
 		return err;
 
-	devm_pci_remap_iospace(dev, &pcie->pio, pcie->io.start);
+	err = devm_pci_remap_iospace(dev, &pcie->pio, pcie->io.start);
+	if (err)
+		return err;
 
 	return 0;
 }
-- 
2.20.1