[PATCH] PCI: Fix to avoid potential NULL pointer dereference

[Aditya Pakki]

In gen_pci_probe, of_match_node can return a NULL pointer in case of
failure. The patch avoids a NULL pointer dereference in such a scenario.

Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
 drivers/pci/controller/pci-host-generic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/controller/pci-host-generic.c 
b/drivers/pci/controller/pci-host-generic.c
index dea3ec7592a2..85f473f50e96 100644
--- a/drivers/pci/controller/pci-host-generic.c
+++ b/drivers/pci/controller/pci-host-generic.c
@@ -83,6 +83,8 @@ static int gen_pci_probe(struct platform_device *pdev)
        struct pci_ecam_ops *ops;
 
        of_id = of_match_node(gen_pci_of_match, pdev->dev.of_node);
+       if (!of_id)
+               return -ENXIO;
        ops = (struct pci_ecam_ops *)of_id->data;
 
        return pci_host_common_probe(pdev, ops);
-- 
2.17.1