diff mbox series

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

Message ID 20230411033928.30397-4-Sergey.Semin@baikalelectronics.ru
State New
Headers
Series PCI: dwc: Relatively simple fixes and cleanups |

Commit Message

Serge Semin April 11, 2023, 3:39 a.m. UTC 
  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(+)

Comments

Manivannan Sadhasivam April 11, 2023, 11:05 a.m. UTC | #1 
On Tue, Apr 11, 2023 at 06:39:21AM +0300, Serge Semin wrote:
> 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>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

- Mani

> ---
>  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
> 
>
diff mbox series

Patch

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);