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

[Manivannan Sadhasivam]

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@xxxxxxxxxx>
> Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>

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

- 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
> 
> 

-- 
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