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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Geert Uytterhoeven <geert+renesas@glider.be>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.14 48/67] PCI: rcar: Handle
 rcar_pcie_parse_request_of_pci_ranges() failures
Thread-Topic: [PATCH AUTOSEL for 4.14 48/67] PCI: rcar: Handle
 rcar_pcie_parse_request_of_pci_ranges() failures
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Date:   Thu, 8 Mar 2018 04:57:52 +0000
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From: Geert Uytterhoeven <geert+renesas@glider.be>

[ Upstream commit 83c75ddd816e979802bd244ad494139f28152921 ]

rcar_pcie_parse_request_of_pci_ranges() can fail and return an error
code, but this is not checked nor handled.

Fix this by adding the missing error handling.

Fixes: 5d2917d469faab72 ("PCI: rcar: Convert to DT resource parsing API")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/pci/host/pcie-rcar.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c
index f09ff4789bb5..8f44a7d14bff 100644
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/host/pcie-rcar.c
@@ -1141,7 +1141,9 @@ static int rcar_pcie_probe(struct platform_device *pd=
ev)
=20
 	INIT_LIST_HEAD(&pcie->resources);
=20
-	rcar_pcie_parse_request_of_pci_ranges(pcie);
+	err =3D rcar_pcie_parse_request_of_pci_ranges(pcie);
+	if (err)
+		goto err_free_bridge;
=20
 	err =3D rcar_pcie_get_resources(pcie);
 	if (err < 0) {
@@ -1196,6 +1198,7 @@ static int rcar_pcie_probe(struct platform_device *pd=
ev)
=20
 err_free_resource_list:
 	pci_free_resource_list(&pcie->resources);
+err_free_bridge:
 	pci_free_host_bridge(bridge);
=20
 	return err;
--=20
2.14.1