linux-kernel - [PATCH] PCI: qcom: Add async probe support

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Date:   Sat, 29 Oct 2022 17:05:20 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     lpieralisi@...nel.org
Cc:     bhelgaas@...gle.com, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, johan+linaro@...nel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH] PCI: qcom: Add async probe support

Qcom PCIe RC driver waits for the PHY link to be up during the probe. This
consumes several milliseconds during boot. So add async probe support so
that other drivers can load in parallel while this driver waits for the
link to be up.

Suggested-by: Rob Herring <robh@...nel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index f711acacaeaf..e0b8d6dc4ce2 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1768,6 +1768,7 @@ static struct platform_driver qcom_pcie_driver = {
 		.name = "qcom-pcie",
 		.suppress_bind_attrs = true,
 		.of_match_table = qcom_pcie_match,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	},
 };
 builtin_platform_driver(qcom_pcie_driver);
-- 
2.25.1