PCI: qcom: Update ICC and OPP values after Link Up event

4581403 ("PCI: qcom: Enumerate endpoints based on Link up event in
'global_irq' interrupt") added the Link Up-based enumeration support, but
did not update the ICC/OPP vote once link is up. Before that, the update
happened during probe and the endpoints may or may not be enumerated at
that time, so the ICC/OPP vote was not guaranteed to be accurate.

With Link Up-based enumeration support, the driver can request the accurate
vote based on the PCIe link.

Call qcom_pcie_icc_opp_update() in qcom_pcie_global_irq_thread() after
enumerating the endpoints.

Fixes: 4581403 ("PCI: qcom: Enumerate endpoints based on Link up event in 'global_irq' interrupt")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Krishna chaitanya chundru <[email protected]>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Niklas Cassel <[email protected]>

Author: Krishna chaitanya chundru

drivers/pci/controller/dwc/pcie-qcom.c

@@ -1569,6 +1569,8 @@ static irqreturn_t qcom_pcie_global_irq_thread(int irq, void *data)
 		pci_lock_rescan_remove();
 		pci_rescan_bus(pp->bridge->bus);
 		pci_unlock_rescan_remove();
+
+		qcom_pcie_icc_opp_update(pcie);
 	} else {
 		dev_WARN_ONCE(dev, 1, "Received unknown event. INT_STATUS: 0x%08x\n",
 			      status);