linux-kernel - Re: [PATCH v3] usb: xhci: only set D3hot for pci device

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Date:   Wed, 20 Nov 2019 19:16:43 +0000
From:   Jack Pham <jackp@...eaurora.org>
To:     Henry Lin <henryl@...dia.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] usb: xhci: only set D3hot for pci device

On Tue, Nov 19, 2019 at 04:16:56PM +0800, Henry Lin wrote:
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index 6c17e3fe181a..e59346488f64 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -770,7 +770,7 @@ static void xhci_stop(struct usb_hcd *hcd)
>   *
>   * This will only ever be called with the main usb_hcd (the USB3 roothub).
>   */
> -static void xhci_shutdown(struct usb_hcd *hcd)
> +void xhci_shutdown(struct usb_hcd *hcd)
>  {
>  	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
>  
> @@ -789,10 +789,6 @@ static void xhci_shutdown(struct usb_hcd *hcd)
>  	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
>  			"xhci_shutdown completed - status = %x",
>  			readl(&xhci->op_regs->status));
> -
> -	/* Yet another workaround for spurious wakeups at shutdown with HSW */
> -	if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
> -		pci_set_power_state(to_pci_dev(hcd->self.sysdev), PCI_D3hot);
>  }

Shouldn't this function also now need to be EXPORTed?

Jack
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