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authorBjorn Helgaas <bhelgaas@google.com>2024-01-15 12:10:37 -0600
committerBjorn Helgaas <bhelgaas@google.com>2024-01-15 12:10:37 -0600
commit186ce88c9063086f8e11d1eeafde360f0926b341 (patch)
tree39b02456013b73d03eb9ec5b60e8ce7b4048e522 /drivers
parent787c72b1d45be57f902f13a84552b118fa61e063 (diff)
parentc12ca110c613a81cb0f0099019c839d078cd0f38 (diff)
Merge branch 'pci/controller/keystone'
- Hold power management references to all PHYs while enabling them to avoid a race when one provides clocks to others (Siddharth Vadapalli) * pci/controller/keystone: PCI: keystone: Fix race condition when initializing PHYs
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/controller/dwc/pci-keystone.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index d0f50cceede9..da8a1b21adaa 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -1218,7 +1218,16 @@ static int ks_pcie_probe(struct platform_device *pdev)
goto err_link;
}
+ /* Obtain references to the PHYs */
+ for (i = 0; i < num_lanes; i++)
+ phy_pm_runtime_get_sync(ks_pcie->phy[i]);
+
ret = ks_pcie_enable_phy(ks_pcie);
+
+ /* Release references to the PHYs */
+ for (i = 0; i < num_lanes; i++)
+ phy_pm_runtime_put_sync(ks_pcie->phy[i]);
+
if (ret) {
dev_err(dev, "failed to enable phy\n");
goto err_link;