From 29ff60fda59f102ede8f1588816264354f20d72f Mon Sep 17 00:00:00 2001 From: Krishna chaitanya chundru Date: Sat, 23 Nov 2024 00:40:00 +0530 Subject: [PATCH] PCI: qcom: Don't wait for link if we can detect Link Up MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 36971d6c5a9a134c15760ae9fd13c6d5f9a36abb ] If we have a 'global' IRQ for Link Up events, we need not wait for the link to be up during PCI initialization, which reduces startup time. Check for 'global' IRQ, and if present, set 'use_linkup_irq', so dw_pcie_host_init() doesn't wait for the link to come up. Link: https://lore.kernel.org/r/20241123-remove_wait2-v5-2-b5f9e6b794c2@quicinc.com Signed-off-by: Krishna chaitanya chundru Signed-off-by: Krzysztof Wilczyński [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas Reviewed-by: Manivannan Sadhasivam Reviewed-by: Niklas Cassel Stable-dep-of: e9ce5b380443 ("Revert "PCI: qcom: Don't wait for link if we can detect Link Up"") Signed-off-by: Sasha Levin --- drivers/pci/controller/dwc/pcie-qcom.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 5d27cd149f51..0205c18d95a0 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -1696,6 +1696,10 @@ static int qcom_pcie_probe(struct platform_device *pdev) platform_set_drvdata(pdev, pcie); + irq = platform_get_irq_byname_optional(pdev, "global"); + if (irq > 0) + pp->use_linkup_irq = true; + ret = dw_pcie_host_init(pp); if (ret) { dev_err(dev, "cannot initialize host\n"); @@ -1709,7 +1713,6 @@ static int qcom_pcie_probe(struct platform_device *pdev) goto err_host_deinit; } - irq = platform_get_irq_byname_optional(pdev, "global"); if (irq > 0) { ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, qcom_pcie_global_irq_thread,