6.18-stable review patch. If anyone has any objections, please let me know.
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From: Siddharth Vadapalli s-vadapalli@ti.com
[ Upstream commit 95d9c3f0e4546eaec0977f3b387549a8463cd49f ]
Commit under Fixes introduced support for PCIe EP mode on AM654x platforms. When the mode happens to be either "DW_PCIE_RC_TYPE" or "DW_PCIE_EP_TYPE", the PCIe Controller is configured accordingly. However, when the mode is neither of them, an error message is displayed, but the driver probe succeeds. Since this "invalid" mode is not associated with a functional PCIe Controller, the probe should fail.
Fix the behavior by exiting "ks_pcie_probe()" with the return value of "-EINVAL" in addition to displaying the existing error message when the mode is invalid.
Fixes: 23284ad677a9 ("PCI: keystone: Add support for PCIe EP in AM654x Platforms") Signed-off-by: Siddharth Vadapalli s-vadapalli@ti.com Signed-off-by: Manivannan Sadhasivam mani@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Link: https://patch.msgid.link/20251029080547.1253757-4-s-vadapalli@ti.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/controller/dwc/pci-keystone.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index eb00aa3807220..25b8193ffbcf1 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -1337,6 +1337,8 @@ static int ks_pcie_probe(struct platform_device *pdev) break; default: dev_err(dev, "INVALID device type %d\n", mode); + ret = -EINVAL; + goto err_get_sync; }
ks_pcie_enable_error_irq(ks_pcie);