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32 lines
1.0 KiB
Diff
32 lines
1.0 KiB
Diff
From 8e809b241695252e397bf0d7fc5f36e115c38831 Mon Sep 17 00:00:00 2001
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From: Robert Marko <robert.marko@sartura.hr>
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Date: Fri, 5 Mar 2021 11:47:59 +0100
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Subject: [PATCH] mwlwifi: fix PCIe DT node null pointer dereference
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pci_bus_to_OF_node() used to get the PCI bus DT node
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returns node if found or NULL if none is found.
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Since the return of pci_bus_to_OF_node() is not checked in
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the DT node name print it will cause a null pointer
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dereference and crash the kernel.
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So first check whether the node is not NULL and then print.
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Signed-off-by: Robert Marko <robert.marko@sartura.hr>
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---
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hif/pcie/pcie.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/hif/pcie/pcie.c
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+++ b/hif/pcie/pcie.c
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@@ -685,7 +685,8 @@ static struct device_node *pcie_get_devi
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struct device_node *dev_node;
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dev_node = pci_bus_to_OF_node(pcie_priv->pdev->bus);
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- wiphy_info(priv->hw->wiphy, "device node: %s\n", dev_node->full_name);
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+ if (dev_node)
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+ wiphy_info(priv->hw->wiphy, "device node: %s\n", dev_node->full_name);
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return dev_node;
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}
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