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Subject[PATCH][next] PCI: tegra: tegra194: fix phy_count less than zero check
Date
From: Colin Ian King <colin.king@canonical.com>

The check for pcie->phy_count < 0 is always false because phy_count
is an unsigned int and can never be less than zero. Fix this by
assigning ret to the return from of_property_count_strings and
checking if this is less than zero instead.

Addresses-Coverity: ("Dead code")
Fixes: 6404441c8e13 ("PCI: tegra: Add Tegra194 PCIe support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
drivers/pci/controller/dwc/pcie-tegra194.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index fc0dbeb31d78..b47ea3e68303 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -969,12 +969,13 @@ static int tegra_pcie_dw_parse_dt(struct tegra_pcie_dw *pcie)
return ret;
}

- pcie->phy_count = of_property_count_strings(np, "phy-names");
- if (pcie->phy_count < 0) {
+ ret = of_property_count_strings(np, "phy-names");
+ if (ret < 0) {
dev_err(pcie->dev, "Failed to find PHY entries: %d\n",
- pcie->phy_count);
- return pcie->phy_count;
+ ret);
+ return ret;
}
+ pcie->phy_count = ret;

if (of_property_read_bool(np, "nvidia,update-fc-fixup"))
pcie->update_fc_fixup = true;
--
2.20.1
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