linux-kernel - Re: [PATCH v4 3/5] usb: host: xhci-plat: support override of hc driver

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Message-ID: <YmfHV3V/wf9Dsn6l@kroah.com>
Date:   Tue, 26 Apr 2022 12:20:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Daehwan Jung <dh10.jung@...sung.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        "open list:USB XHCI DRIVER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Howard Yen <howardyen@...gle.com>,
        Jack Pham <jackp@...eaurora.org>,
        Puma Hsu <pumahsu@...gle.com>,
        "J . Avila" <elavila@...gle.com>, sc.suh@...sung.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: Re: [PATCH v4 3/5] usb: host: xhci-plat: support override of hc
 driver

On Tue, Apr 26, 2022 at 06:18:46PM +0900, Daehwan Jung wrote:
> It helps xhci-plat driver increase usability. Vendors could use functions
> in xhci-plat mostly and use some overrides to do what they wants without
> modifying xhci-plat driver.
> 
> Signed-off-by: Daehwan Jung <dh10.jung@...sung.com>
> ---
>  drivers/usb/host/xhci-plat.c | 6 ++++++
>  drivers/usb/host/xhci-plat.h | 1 +
>  2 files changed, 7 insertions(+)
> 
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index a5881ff945a6..6efa3169bf69 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -173,6 +173,12 @@ static const struct of_device_id usb_xhci_of_match[] = {
>  MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
>  #endif
>  
> +void xhci_plat_override_driver(const struct xhci_driver_overrides *xhci_vendor_overrides)
> +{
> +	xhci_init_driver(&xhci_plat_hc_driver, xhci_vendor_overrides);
> +}
> +EXPORT_SYMBOL(xhci_plat_override_driver);

EXPORT_SYMBOL_GPL() please.

thanks,

greg k-h