[PATCH v5 1/4] PCI/ERR: Add support for resetting the Root Ports in a platform specific way

[Lukas Wunner]

On Tue, Jul 15, 2025 at 01:29:18PM +0530, Manivannan Sadhasivam wrote:
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -4964,7 +4964,19 @@ void pci_reset_secondary_bus(struct pci_dev *dev)
>  
>  void __weak pcibios_reset_secondary_bus(struct pci_dev *dev)
>  {
> +	struct pci_host_bridge *host = pci_find_host_bridge(dev->bus);
> +	int ret;
> +
> +	if (host->reset_root_port) {
> +		ret = host->reset_root_port(host, dev);
> +		if (ret)
> +			pci_err(dev, "Failed to reset Root Port: %d\n", ret);
> +
> +		return;
> +	}
> +

There used to be a pci_is_root_bus() check here:

https://lore.kernel.org/r/20250524185304.26698-2-manivannan.sadhasivam@linaro.org/

Thanks,

Lukas