6.12-stable review patch. If anyone has any objections, please let me know.
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From: Krishna chaitanya chundru quic_krichai@quicinc.com
[ Upstream commit f0639013d340580b72df95d012a93f35eeb0da64 ]
4581403f6792 ("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: 4581403f6792 ("PCI: qcom: Enumerate endpoints based on Link up event in 'global_irq' interrupt") Link: https://lore.kernel.org/r/20241123-remove_wait2-v5-3-b5f9e6b794c2@quicinc.co... Signed-off-by: Krishna chaitanya chundru quic_krichai@quicinc.com [kwilczynski: commit log] Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Signed-off-by: Bjorn Helgaas bhelgaas@google.com Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Reviewed-by: Niklas Cassel cassel@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/controller/dwc/pcie-qcom.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 6483e1874477e..4c141e05f84e9 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -1559,6 +1559,8 @@ 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);