linux-kernel - [PATCH 4.9 193/240] PCI: Release OF node in pci_scan

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Message-Id: <20210520092115.145414917@linuxfoundation.org>
Date:   Thu, 20 May 2021 11:23:05 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Leon Romanovsky <leonro@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 193/240] PCI: Release OF node in pci_scan_device()s error path

From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

[ Upstream commit c99e755a4a4c165cad6effb39faffd0f3377c02d ]

In pci_scan_device(), if pci_setup_device() fails for any reason, the code
will not release device's of_node by calling pci_release_of_node().  Fix
that by calling the release function.

Fixes: 98d9f30c820d ("pci/of: Match PCI devices to OF nodes dynamically")
Link: https://lore.kernel.org/r/20210124232826.1879-1-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/probe.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 19658873b4c1..ddf5ba63b195 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1694,6 +1694,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
 	pci_set_of_node(dev);
 
 	if (pci_setup_device(dev)) {
+		pci_release_of_node(dev);
 		pci_bus_put(dev->bus);
 		kfree(dev);
 		return NULL;
-- 
2.30.2