Re: [PATCH v5 1/2] PCI: mediatek: Add Mediatek PCIe host controller support

[Bjorn Helgaas]

On Sun, May 21, 2017 at 11:42:24AM +0800, Ryder Lee wrote:
> Add support for the Mediatek PCIe Gen2 controller which can
> be found on MT7623 series SoCs.
> 
> Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
> ---
>  drivers/pci/host/Kconfig         |  11 +
>  drivers/pci/host/Makefile        |   1 +
>  drivers/pci/host/pcie-mediatek.c | 553 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 565 insertions(+)
>  create mode 100644 drivers/pci/host/pcie-mediatek.c
>...

> +static int mtk_pcie_register_host(struct pci_host_bridge *host)
> +{
> +	struct mtk_pcie *pcie = pci_host_bridge_priv(host);
> +	struct pci_bus *child;
> +	int err;
> +
> +	pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);

Do you really need the PCI_REASSIGN_ALL_RSRC and PCI_REASSIGN_ALL_BUS
flags?  I'd like to get rid of them because we should automatically
assign resources if the firmware hasn't done it.

Bjorn