[PATCH AUTOSEL for 4.14 48/67] PCI: rcar: Handle rcar_pcie_parse_request_of_pci_ranges() failures

Sasha Levin
2018-03-08T06:40:08Z

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 *pdev)

INIT_LIST_HEAD(&pcie->resources);

- rcar_pcie_parse_request_of_pci_ranges(pcie);
+ err = rcar_pcie_parse_request_of_pci_ranges(pcie);
+ if (err)
+ goto err_free_bridge;

err = rcar_pcie_get_resources(pcie);
if (err < 0) {
@@ -1196,6 +1198,7 @@ static int rcar_pcie_probe(struct platform_device *pdev)

err_free_resource_list:
pci_free_resource_list(&pcie->resources);
+err_free_bridge:
pci_free_host_bridge(bridge);

return err;
--
2.14.1