[PATCH 5.4 52/84] PCI: tegra: Fix OF node reference leak

Greg Kroah-Hartman
2024-02-27T14:23:49Z

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit eff21f5da308265678e7e59821795e606f3e560f ]

Commit 9e38e690ace3 ("PCI: tegra: Fix OF node reference leak") has fixed
some node reference leaks in this function but missed some of them.

In fact, having 'port' referenced in the 'rp' structure is not enough to
prevent the leak, until 'rp' is actually added in the 'pcie->ports' list.

Add the missing 'goto err_node_put' accordingly.

Link: https://lore.kernel.org/r/55b11e9a7fa2987fbc0869d68ae59888954d65e2.1620148539.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pci/controller/pci-tegra.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index 64921c63874fa..74c0ddd433815 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -2267,13 +2267,15 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie)
rp->np = port;

rp->base = devm_pci_remap_cfg_resource(dev, &rp->regs);
- if (IS_ERR(rp->base))
- return PTR_ERR(rp->base);
+ if (IS_ERR(rp->base)) {
+ err = PTR_ERR(rp->base);
+ goto err_node_put;
+ }

label = devm_kasprintf(dev, GFP_KERNEL, "pex-reset-%u", index);
if (!label) {
- dev_err(dev, "failed to create reset GPIO label\n");
- return -ENOMEM;
+ err = -ENOMEM;
+ goto err_node_put;
}

/*
@@ -2291,7 +2293,8 @@ static int tegra_pcie_parse_dt(struct tegra_pcie *pcie)
} else {
dev_err(dev, "failed to get reset GPIO: %ld\n",
PTR_ERR(rp->reset_gpio));
- return PTR_ERR(rp->reset_gpio);
+ err = PTR_ERR(rp->reset_gpio);
+ goto err_node_put;
}
}

--
2.43.0