Re: [PATCH 2/2] pci: quirks: Override Synopsys USB 3.x HAPS device driver

[Thinh Nguyen <thinh.nguyen@synopsys.com>]

++ linux-usb
++ Greg

On 11/2/2018 6:47 PM, Thinh Nguyen wrote:
> Synopsys USB 3.x host HAPS platform has a class code of
> PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
> devices should use dwc3-haps driver. Set driver_override to dwc3-haps
> for these platforms.
>
> Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
> ---
>  drivers/pci/quirks.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
>
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 6bc27b7fd452..5f7c3ade7749 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -618,6 +618,27 @@ static void quirk_amd_nl_class(struct pci_dev *pdev)
>  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB,
>  		quirk_amd_nl_class);
>  
> +/*
> + * Synopsys USB 3.x host HAPS platform has a class code of
> + * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these
> + * devices should use dwc3-haps driver. Set driver_override to dwc3-haps for
> + * these platforms.
> + */
> +static void quirk_synopsys_haps(struct pci_dev *pdev)
> +{
> +	/* Use dwc3-haps driver instead of xhci-pci */
> +	pdev->driver_override = "dwc3-haps";
> +}
> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SYNOPSYS,
> +			PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3,
> +			quirk_synopsys_haps);
> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SYNOPSYS,
> +			PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI,
> +			quirk_synopsys_haps);
> +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SYNOPSYS,
> +			PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31,
> +			quirk_synopsys_haps);
> +
>  /*
>   * Let's make the southbridge information explicit instead of having to
>   * worry about people probing the ACPI areas, for example.. (Yes, it