[PATCH RESEND v3 03/10] PCI: bt1: Enable async probe type

Serge Semin
2023-04-11T03:40:15Z

It's safe to enable the asyncronous probe type since the PCIe peripheral
devices probing order isn't essential for booting the system. Moreover
enabling that feature saves 0.5 seconds of bootup time if no any device
attached to the PCIe root port. It's a significant performance gain seeing
the total bootup time takes about 3 seconds.

Suggested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
---
drivers/pci/controller/dwc/pcie-bt1.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pcie-bt1.c b/drivers/pci/controller/dwc/pcie-bt1.c
index 95a723a6fd46..e36a20bf82cf 100644
--- a/drivers/pci/controller/dwc/pcie-bt1.c
+++ b/drivers/pci/controller/dwc/pcie-bt1.c
@@ -638,6 +638,7 @@ static struct platform_driver bt1_pcie_driver = {
.driver = {
.name = "bt1-pcie",
.of_match_table = bt1_pcie_of_match,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
};
module_platform_driver(bt1_pcie_driver);
--
2.40.0